The document discusses several misunderstood determinants of COVID-19 that have been claimed but lack epidemiological evidence. It questions correlations that have been proposed between COVID-19 outcomes and factors like median age, BCG vaccination rates, religion, and disease burdens. While some correlations appear convincing based on statistics alone, the document argues they ignore important context and exceptions. There have been very few rigorous epidemiological studies of COVID-19 to determine true disease modulators and spread, and many studies have misused non-epidemiological data.
Rabies is a zoonotic disease caused by RNA viruses.
Virus is transmitted in the saliva of rabid mammals via a bite.
After entry to the central nervous system, these viruses cause an acute progressive encephalomyelitis.
The incubation period usually ranges from 1 to 3 months after exposure, but can range from days to years.
Sandflies are small, hairy insects that are vectors of diseases like leishmaniasis. They undergo complete metamorphosis from egg to larva to pupa to adult. As adults, they are nocturnal and breed in moist, organic-rich areas near dwellings. Their bite can transmit parasites and is painful. Control involves removing breeding sites, spraying insecticides, and using protective measures for people.
This document provides an overview of Salmonella, including Salmonella enterica and Salmonella bongori. It discusses Salmonella serotyping based on surface structures. The pathogenesis and immunity of Salmonella is described, noting how it attaches and invades the intestines. Two pathogenicity islands regulate these processes. Epidemiology sections explain the animal reservoirs and most common sources of human infections like poultry, eggs and dairy. Clinical diseases caused include gastroenteritis, septicemia, enteric fever and asymptomatic colonization. Laboratory diagnosis focuses on culturing Salmonella from blood, feces or bone marrow. Biochemical tests are used to identify isolates.
- Clostridium perfringens is a gram-positive, anaerobic, spore-forming bacillus that can cause gas gangrene. It produces several potent toxins and enzymes.
- It forms central or subterminal spores and appears as large bacilli on microscopy. It turns meat pink on culture but does not digest it. It causes target hemolysis on blood agar.
- Gas gangrene is a serious infection caused by C. perfringens that involves muscle tissue necrosis and gas formation. It presents with increasing pain, edema, and tissue blackening. Other Clostridium species such as C. septicum can also cause gas gangrene.
This document discusses pyogenic meningitis (acute bacterial meningitis). It begins by defining pyogenic infections and describing the anatomy of the meninges. It then covers the epidemiology, causes, clinical features, diagnostic process, treatment, and potential sequelae of bacterial meningitis. Key points include that the most common causes are pneumococcus, meningococcus, and H. influenzae. Clinical features include headache, fever, neck stiffness, and signs of meningeal irritation. Diagnosis involves CSF analysis showing pleocytosis and low glucose. Treatment involves intravenous antibiotics and supportive care. Potential long term effects include deafness, epilepsy, or neurological deficits.
Staphylococci are spherical bacteria that occur in grape-like clusters. Staphylococcus aureus is an important human pathogen that can cause a variety of infections, from minor skin infections to life-threatening conditions like toxic shock syndrome and endocarditis. S. aureus produces several virulence factors like toxins and enzymes that damage tissues and evade the immune system. Laboratory diagnosis involves culture, microscopy, and tests like coagulase to identify S. aureus. Antibiotics are used to treat infections, and prevention focuses on hygiene and safe food handling. Methicillin-resistant S. aureus is an antibiotic resistant form that is more difficult to treat.
This document summarizes several species of aerobic, spore-forming bacilli including Bacillus anthracis, Bacillus cereus, and Bacillus subtilis. It describes their classification, morphology, growth characteristics, pathogenicity, mechanisms of infection, clinical presentations, diagnosis, treatment and prevention. Key points are that B. anthracis causes anthrax, B. cereus causes two types of food poisoning, and some Bacillus species are used commercially as insecticides.
Clostridium is a genus of anaerobic, Gram-positive bacteria. Species of Clostridium inhabit soils and the intestinal tract of animals, including humans. This genus includes several significant human pathogens, including the causative agents of botulism and tetanus.
Rabies is a zoonotic disease caused by RNA viruses.
Virus is transmitted in the saliva of rabid mammals via a bite.
After entry to the central nervous system, these viruses cause an acute progressive encephalomyelitis.
The incubation period usually ranges from 1 to 3 months after exposure, but can range from days to years.
Sandflies are small, hairy insects that are vectors of diseases like leishmaniasis. They undergo complete metamorphosis from egg to larva to pupa to adult. As adults, they are nocturnal and breed in moist, organic-rich areas near dwellings. Their bite can transmit parasites and is painful. Control involves removing breeding sites, spraying insecticides, and using protective measures for people.
This document provides an overview of Salmonella, including Salmonella enterica and Salmonella bongori. It discusses Salmonella serotyping based on surface structures. The pathogenesis and immunity of Salmonella is described, noting how it attaches and invades the intestines. Two pathogenicity islands regulate these processes. Epidemiology sections explain the animal reservoirs and most common sources of human infections like poultry, eggs and dairy. Clinical diseases caused include gastroenteritis, septicemia, enteric fever and asymptomatic colonization. Laboratory diagnosis focuses on culturing Salmonella from blood, feces or bone marrow. Biochemical tests are used to identify isolates.
- Clostridium perfringens is a gram-positive, anaerobic, spore-forming bacillus that can cause gas gangrene. It produces several potent toxins and enzymes.
- It forms central or subterminal spores and appears as large bacilli on microscopy. It turns meat pink on culture but does not digest it. It causes target hemolysis on blood agar.
- Gas gangrene is a serious infection caused by C. perfringens that involves muscle tissue necrosis and gas formation. It presents with increasing pain, edema, and tissue blackening. Other Clostridium species such as C. septicum can also cause gas gangrene.
This document discusses pyogenic meningitis (acute bacterial meningitis). It begins by defining pyogenic infections and describing the anatomy of the meninges. It then covers the epidemiology, causes, clinical features, diagnostic process, treatment, and potential sequelae of bacterial meningitis. Key points include that the most common causes are pneumococcus, meningococcus, and H. influenzae. Clinical features include headache, fever, neck stiffness, and signs of meningeal irritation. Diagnosis involves CSF analysis showing pleocytosis and low glucose. Treatment involves intravenous antibiotics and supportive care. Potential long term effects include deafness, epilepsy, or neurological deficits.
Staphylococci are spherical bacteria that occur in grape-like clusters. Staphylococcus aureus is an important human pathogen that can cause a variety of infections, from minor skin infections to life-threatening conditions like toxic shock syndrome and endocarditis. S. aureus produces several virulence factors like toxins and enzymes that damage tissues and evade the immune system. Laboratory diagnosis involves culture, microscopy, and tests like coagulase to identify S. aureus. Antibiotics are used to treat infections, and prevention focuses on hygiene and safe food handling. Methicillin-resistant S. aureus is an antibiotic resistant form that is more difficult to treat.
This document summarizes several species of aerobic, spore-forming bacilli including Bacillus anthracis, Bacillus cereus, and Bacillus subtilis. It describes their classification, morphology, growth characteristics, pathogenicity, mechanisms of infection, clinical presentations, diagnosis, treatment and prevention. Key points are that B. anthracis causes anthrax, B. cereus causes two types of food poisoning, and some Bacillus species are used commercially as insecticides.
Clostridium is a genus of anaerobic, Gram-positive bacteria. Species of Clostridium inhabit soils and the intestinal tract of animals, including humans. This genus includes several significant human pathogens, including the causative agents of botulism and tetanus.
This document provides information about diabetes mellitus. It discusses the historical background of diabetes, noting descriptions of the disease as early as 1552 BC in ancient Ayurvedic texts. It also discusses the key discoveries in 1889 and 1921 that advanced understanding of the disease. The document notes there are currently 150 million cases globally, with the highest numbers existing in China and India. It classifies diabetes into two main types - type 1 diabetes which requires insulin injections, and type 2 diabetes which may be managed through diet and exercise alone or require medication including insulin. The document discusses epidemiological factors like age, genetics, obesity, and lifestyle influences. It outlines methods for screening and principles of management focused on controlling blood sugar and preventing complications through treatment
Medical Laboratory Technicians and Technologists ACT No. 10 of 1999JoramKenei
This document outlines the Laws of Kenya regarding Medical Laboratory Technicians and Technologists. It establishes the Kenya Medical Laboratory Technicians and Technologists Board to regulate the training, registration, licensing and conduct of medical laboratory technicians and technologists. The Board is tasked with prescribing training courses, approving qualifications, regulating private practice, and taking disciplinary measures to maintain professional standards. The Act also specifies requirements for registration, keeping of registers, approval of training institutions, and qualifications for private practice. Offenses and penalties relating to registration and practice are also provided.
This document provides information on the genus Staphylococcus. It discusses the morphology, classification, virulence factors, and diseases caused by Staphylococcus species. Some key points include:
- Staphylococcus is a genus of gram-positive bacteria that forms grapelike clusters and includes major human pathogens.
- Important virulence factors include toxins like alpha toxin, enterotoxins, and exfoliative toxins. Enzymes and surface proteins also contribute to pathogenesis.
- Major diseases caused by coagulase-positive Staphylococcus include mastitis, tick pyemia, exudative dermatitis, and botryomycosis in various animal
This document provides information on Mycobacterium tuberculosis, the bacteria that causes tuberculosis. It discusses the classification of mycobacteria into obligate parasites, opportunistic pathogens, and saprophytes. M. tuberculosis is an obligate parasite and the causative agent of tuberculosis in humans. The document describes the characteristics, transmission, pathogenesis, and laboratory diagnosis of M. tuberculosis infection. It also discusses the history of the discovery of M. tuberculosis and the development of the BCG vaccine for tuberculosis prevention.
Medical Microbiology Laboratory (Introduction to Medical Mycology)Hussein Al-tameemi
This document discusses the general characteristics of fungi. It begins by defining fungi and distinguishing their characteristics from bacteria. Fungi are eukaryotic organisms that can exist in either a filamentous or unicellular form. They reproduce both sexually and asexually. The document outlines the basic morphological elements of fungi and their metabolic and reproductive processes. It also discusses the classification and diagnosis of fungal infections as well as common antifungal therapies.
This document summarizes Clostridium botulinum, which is an anaerobic, spore-forming bacterium that produces the potent neurotoxin botulinum toxin. It causes the illness botulism in humans through foodborne transmission or wound infection. The botulinum toxin works by blocking the release of acetylcholine at neuromuscular junctions, causing flaccid paralysis. Symptoms vary depending on exposure but include double vision, difficulty swallowing and breathing. Diagnosis involves testing for the toxin in samples. Treatment utilizes an antitoxin to neutralize the circulating toxin.
1) Leprosy, also known as Hansen's disease, is caused by Mycobacterium leprae. It presents with cardinal signs such as numbness, painful nerves, and skin lesions.
2) Laboratory diagnosis involves acid-fast staining of skin and nerve biopsy specimens to identify M. leprae bacteria, as well as animal inoculation and the lepromin test.
3) The lepromin test evaluates a patient's immune response and is used to classify leprosy type and assess prognosis and resistance to the disease.
Bacillus is a genus of rod-shaped, Gram-positive bacteria that can form dormant endospores. The document focuses on Bacillus anthracis, which causes anthrax. It describes the morphology, cultural characteristics, virulence factors, and methods of diagnosis and prevention of B. anthracis. Key points include that B. anthracis forms encapsulated, non-motile rods and terminal spores. The anthrax toxins are composed of lethal factor, edema factor, and protective antigen, which combine to cause disease. Diagnosis involves microscopy, culture, and serology. Prevention for humans involves vaccination with anthrax toxoid and occupational hygiene, while animals are vaccinated with attenuated spore
1. Staphylococci are gram-positive cocci that grow in clusters and are catalase-positive. The coagulase test is used to differentiate Staphylococcus aureus from coagulase-negative staphylococci (CoNS).
2. S. aureus causes a variety of diseases including localized skin infections, pneumonia, bacteremia, osteomyelitis, endocarditis and toxic shock syndrome. Identification involves culture, microscopy, and biochemical tests like coagulase and catalase.
3. Strain typing methods are used to trace outbreak sources and identify toxin-producing strains causing food poisoning and toxic shock syndrome.
The document provides information on tuberculosis including its definition, epidemiology, etiology, pathophysiology, classification, clinical presentation, diagnosis, management, and a sample case presentation. Tuberculosis is defined as an infectious disease caused primarily by Mycobacterium tuberculosis that usually affects the lung parenchyma. It discusses trends in global and India-specific TB incidence and mortality. Etiology and characteristics of M. tuberculosis are explained. The pathophysiology, types of TB, and typical clinical signs and symptoms are summarized. Diagnosis involves medical history, physical exam, tuberculin skin test, chest X-ray, microbiological tests, and blood tests. Management outlined first and second-line anti-TB drug reg
The document discusses the growth and nutrition requirements of bacteria. It states that bacteria require carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur and various minerals to grow. It describes the different environmental factors that affect bacterial growth such as temperature, pH, oxygen levels, osmotic pressure and light exposure. It also explains the bacterial growth curve and the different phases of bacterial growth: lag phase, log or exponential phase, stationary phase and death phase.
The document provides information on the clinical management of COVID-19 cases in the state of Gujarat, India. It discusses the epidemiology of COVID-19, describing how it originated in Wuhan, China and has now spread worldwide. It defines suspect, probable and confirmed cases and categorizes cases by severity from mild to severe. For treatment, mild cases are managed at home or primary health centers while moderate cases go to dedicated COVID centers and severe cases to dedicated COVID hospitals. It outlines the testing, symptoms, and medical management approach for COVID-19 cases based on severity.
Anthrax is a disease caused by the bacterium Bacillus anthracis that primarily affects animals like cattle, sheep, and goats. It can infect humans through contact with infected animals or their products. While rare, human infections usually start as a skin lesion. The bacteria produces lethal toxins and forms spores that can survive for decades in the soil. Diagnosis involves gram staining of samples to identify the rod-shaped, gram-positive bacteria. Testing methods include an ELISA antibody test to detect the protective antigen, culturing the bacteria from lesions or fluids, and PCR to confirm presence of B. anthracis in a few hours.
- Clostridium botulinum is a gram-positive, spore-forming bacterium that produces botulinum toxin, which causes the flaccid paralysis seen in botulism.
- It exists as rod-shaped bacteria 0.5-2.0 micrometers wide and 1.6-22.0 micrometers long that form oval, subterminal endospores.
- The bacterium produces seven types of potent neurotoxins (A-G) that inhibit the release of acetylcholine at motor neuron synapses, preventing muscle contraction and causing paralysis.
Staphylococcus aureus is a gram-positive, non-motile, non-sporing bacterium that forms clusters resembling bunches of grapes under the microscope due to multiplying in two planes. It grows on nutrient agar and blood agar to form creamy, circular colonies. It produces hemolysins and enterotoxins that can cause food poisoning when the toxins are ingested. S. aureus commonly resides in the nostrils and can cause infections when contaminated hands or objects touch wounds, leading to issues like cellulitis, pneumonia, or urinary tract infections.
Clostridium tetani is an anaerobic, spore-forming bacterium found in soil and the intestines of animals that produces a neurotoxin causing the serious disease tetanus. It enters the body through wounds and produces a potent toxin called tetanospasmin that causes painful muscle spasms by blocking inhibitory motor nerve signals in the central nervous system. Symptoms include lockjaw, arched back, and risus sardonicus. Treatment involves wound cleaning, antibiotics, tetanus antitoxin, and vaccination to stimulate protective antibodies against the toxin.
The document discusses various tests used to determine the genus and species of a bacterial isolate based on its metabolic capabilities and inhibitor profiles. It describes enzyme-based tests like catalase, coagulase, pyrrolidonyl arylamidase (PYR), and oxidase that examine single enzymes or metabolic pathways. It also covers tests that analyze an isolate's ability to grow in the presence of inhibitors like antibiotics, salts, and surfactants. Multiple tests are combined to establish the enzymatic and inhibitory profiles needed for identification.
The Löwenstein–Jensen medium is a selective culture medium used for the isolation and cultivation of Mycobacterium species like M. tuberculosis. It was developed in the late 19th century and incorporates malachite green to inhibit unwanted bacterial growth while encouraging mycobacteria. M. tuberculosis colonies appear brown and granular on this medium after 4 weeks of incubation due to its slow growth rate. The medium contains egg suspension, glycerol, and malachite green among other ingredients to selectively promote mycobacterial growth.
Spirillaceae is a family of bacteria in the phylum Spirochaetes. It includes the genus Spirillum. Spirillaceae bacteria have a rigid, spiral or helical shape. They are gram-negative, typically 5-250 micrometers long and 0.1-0.6 micrometers wide. Their flagella are located between the inner and outer membranes. They can move via twisting caused by their flagella and reproduce through binary fission. Some Spirillum species can cause diseases like rat-bite fever.
1. The document discusses the classification of parasites, beginning with an overview of parasitology and definitions of key terms like parasite, host, and types of parasite-host associations.
2. Parasites are classified into three main phyla - Protozoa, Platyhelminthes, and Nemathelminthes. Protozoa are single-celled parasites while the latter two contain multicellular worms.
3. Key parasitic groups are described in more detail, including characteristics, examples of genera/species, and life cycles. This includes intestinal and tissue protozoa, cestodes, trematodes, and nematodes.
The document discusses how the COVID-19 pandemic has impacted demography. It notes that demography studies population size, birth/death rates, and composition. The pandemic has affected these areas through disproportionate infection and mortality rates along gender, age, and racial lines. Older individuals and those with preexisting conditions have higher mortality. The pandemic may also impact fertility slightly but transmission from mother to baby appears low.
This document provides information about diabetes mellitus. It discusses the historical background of diabetes, noting descriptions of the disease as early as 1552 BC in ancient Ayurvedic texts. It also discusses the key discoveries in 1889 and 1921 that advanced understanding of the disease. The document notes there are currently 150 million cases globally, with the highest numbers existing in China and India. It classifies diabetes into two main types - type 1 diabetes which requires insulin injections, and type 2 diabetes which may be managed through diet and exercise alone or require medication including insulin. The document discusses epidemiological factors like age, genetics, obesity, and lifestyle influences. It outlines methods for screening and principles of management focused on controlling blood sugar and preventing complications through treatment
Medical Laboratory Technicians and Technologists ACT No. 10 of 1999JoramKenei
This document outlines the Laws of Kenya regarding Medical Laboratory Technicians and Technologists. It establishes the Kenya Medical Laboratory Technicians and Technologists Board to regulate the training, registration, licensing and conduct of medical laboratory technicians and technologists. The Board is tasked with prescribing training courses, approving qualifications, regulating private practice, and taking disciplinary measures to maintain professional standards. The Act also specifies requirements for registration, keeping of registers, approval of training institutions, and qualifications for private practice. Offenses and penalties relating to registration and practice are also provided.
This document provides information on the genus Staphylococcus. It discusses the morphology, classification, virulence factors, and diseases caused by Staphylococcus species. Some key points include:
- Staphylococcus is a genus of gram-positive bacteria that forms grapelike clusters and includes major human pathogens.
- Important virulence factors include toxins like alpha toxin, enterotoxins, and exfoliative toxins. Enzymes and surface proteins also contribute to pathogenesis.
- Major diseases caused by coagulase-positive Staphylococcus include mastitis, tick pyemia, exudative dermatitis, and botryomycosis in various animal
This document provides information on Mycobacterium tuberculosis, the bacteria that causes tuberculosis. It discusses the classification of mycobacteria into obligate parasites, opportunistic pathogens, and saprophytes. M. tuberculosis is an obligate parasite and the causative agent of tuberculosis in humans. The document describes the characteristics, transmission, pathogenesis, and laboratory diagnosis of M. tuberculosis infection. It also discusses the history of the discovery of M. tuberculosis and the development of the BCG vaccine for tuberculosis prevention.
Medical Microbiology Laboratory (Introduction to Medical Mycology)Hussein Al-tameemi
This document discusses the general characteristics of fungi. It begins by defining fungi and distinguishing their characteristics from bacteria. Fungi are eukaryotic organisms that can exist in either a filamentous or unicellular form. They reproduce both sexually and asexually. The document outlines the basic morphological elements of fungi and their metabolic and reproductive processes. It also discusses the classification and diagnosis of fungal infections as well as common antifungal therapies.
This document summarizes Clostridium botulinum, which is an anaerobic, spore-forming bacterium that produces the potent neurotoxin botulinum toxin. It causes the illness botulism in humans through foodborne transmission or wound infection. The botulinum toxin works by blocking the release of acetylcholine at neuromuscular junctions, causing flaccid paralysis. Symptoms vary depending on exposure but include double vision, difficulty swallowing and breathing. Diagnosis involves testing for the toxin in samples. Treatment utilizes an antitoxin to neutralize the circulating toxin.
1) Leprosy, also known as Hansen's disease, is caused by Mycobacterium leprae. It presents with cardinal signs such as numbness, painful nerves, and skin lesions.
2) Laboratory diagnosis involves acid-fast staining of skin and nerve biopsy specimens to identify M. leprae bacteria, as well as animal inoculation and the lepromin test.
3) The lepromin test evaluates a patient's immune response and is used to classify leprosy type and assess prognosis and resistance to the disease.
Bacillus is a genus of rod-shaped, Gram-positive bacteria that can form dormant endospores. The document focuses on Bacillus anthracis, which causes anthrax. It describes the morphology, cultural characteristics, virulence factors, and methods of diagnosis and prevention of B. anthracis. Key points include that B. anthracis forms encapsulated, non-motile rods and terminal spores. The anthrax toxins are composed of lethal factor, edema factor, and protective antigen, which combine to cause disease. Diagnosis involves microscopy, culture, and serology. Prevention for humans involves vaccination with anthrax toxoid and occupational hygiene, while animals are vaccinated with attenuated spore
1. Staphylococci are gram-positive cocci that grow in clusters and are catalase-positive. The coagulase test is used to differentiate Staphylococcus aureus from coagulase-negative staphylococci (CoNS).
2. S. aureus causes a variety of diseases including localized skin infections, pneumonia, bacteremia, osteomyelitis, endocarditis and toxic shock syndrome. Identification involves culture, microscopy, and biochemical tests like coagulase and catalase.
3. Strain typing methods are used to trace outbreak sources and identify toxin-producing strains causing food poisoning and toxic shock syndrome.
The document provides information on tuberculosis including its definition, epidemiology, etiology, pathophysiology, classification, clinical presentation, diagnosis, management, and a sample case presentation. Tuberculosis is defined as an infectious disease caused primarily by Mycobacterium tuberculosis that usually affects the lung parenchyma. It discusses trends in global and India-specific TB incidence and mortality. Etiology and characteristics of M. tuberculosis are explained. The pathophysiology, types of TB, and typical clinical signs and symptoms are summarized. Diagnosis involves medical history, physical exam, tuberculin skin test, chest X-ray, microbiological tests, and blood tests. Management outlined first and second-line anti-TB drug reg
The document discusses the growth and nutrition requirements of bacteria. It states that bacteria require carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur and various minerals to grow. It describes the different environmental factors that affect bacterial growth such as temperature, pH, oxygen levels, osmotic pressure and light exposure. It also explains the bacterial growth curve and the different phases of bacterial growth: lag phase, log or exponential phase, stationary phase and death phase.
The document provides information on the clinical management of COVID-19 cases in the state of Gujarat, India. It discusses the epidemiology of COVID-19, describing how it originated in Wuhan, China and has now spread worldwide. It defines suspect, probable and confirmed cases and categorizes cases by severity from mild to severe. For treatment, mild cases are managed at home or primary health centers while moderate cases go to dedicated COVID centers and severe cases to dedicated COVID hospitals. It outlines the testing, symptoms, and medical management approach for COVID-19 cases based on severity.
Anthrax is a disease caused by the bacterium Bacillus anthracis that primarily affects animals like cattle, sheep, and goats. It can infect humans through contact with infected animals or their products. While rare, human infections usually start as a skin lesion. The bacteria produces lethal toxins and forms spores that can survive for decades in the soil. Diagnosis involves gram staining of samples to identify the rod-shaped, gram-positive bacteria. Testing methods include an ELISA antibody test to detect the protective antigen, culturing the bacteria from lesions or fluids, and PCR to confirm presence of B. anthracis in a few hours.
- Clostridium botulinum is a gram-positive, spore-forming bacterium that produces botulinum toxin, which causes the flaccid paralysis seen in botulism.
- It exists as rod-shaped bacteria 0.5-2.0 micrometers wide and 1.6-22.0 micrometers long that form oval, subterminal endospores.
- The bacterium produces seven types of potent neurotoxins (A-G) that inhibit the release of acetylcholine at motor neuron synapses, preventing muscle contraction and causing paralysis.
Staphylococcus aureus is a gram-positive, non-motile, non-sporing bacterium that forms clusters resembling bunches of grapes under the microscope due to multiplying in two planes. It grows on nutrient agar and blood agar to form creamy, circular colonies. It produces hemolysins and enterotoxins that can cause food poisoning when the toxins are ingested. S. aureus commonly resides in the nostrils and can cause infections when contaminated hands or objects touch wounds, leading to issues like cellulitis, pneumonia, or urinary tract infections.
Clostridium tetani is an anaerobic, spore-forming bacterium found in soil and the intestines of animals that produces a neurotoxin causing the serious disease tetanus. It enters the body through wounds and produces a potent toxin called tetanospasmin that causes painful muscle spasms by blocking inhibitory motor nerve signals in the central nervous system. Symptoms include lockjaw, arched back, and risus sardonicus. Treatment involves wound cleaning, antibiotics, tetanus antitoxin, and vaccination to stimulate protective antibodies against the toxin.
The document discusses various tests used to determine the genus and species of a bacterial isolate based on its metabolic capabilities and inhibitor profiles. It describes enzyme-based tests like catalase, coagulase, pyrrolidonyl arylamidase (PYR), and oxidase that examine single enzymes or metabolic pathways. It also covers tests that analyze an isolate's ability to grow in the presence of inhibitors like antibiotics, salts, and surfactants. Multiple tests are combined to establish the enzymatic and inhibitory profiles needed for identification.
The Löwenstein–Jensen medium is a selective culture medium used for the isolation and cultivation of Mycobacterium species like M. tuberculosis. It was developed in the late 19th century and incorporates malachite green to inhibit unwanted bacterial growth while encouraging mycobacteria. M. tuberculosis colonies appear brown and granular on this medium after 4 weeks of incubation due to its slow growth rate. The medium contains egg suspension, glycerol, and malachite green among other ingredients to selectively promote mycobacterial growth.
Spirillaceae is a family of bacteria in the phylum Spirochaetes. It includes the genus Spirillum. Spirillaceae bacteria have a rigid, spiral or helical shape. They are gram-negative, typically 5-250 micrometers long and 0.1-0.6 micrometers wide. Their flagella are located between the inner and outer membranes. They can move via twisting caused by their flagella and reproduce through binary fission. Some Spirillum species can cause diseases like rat-bite fever.
1. The document discusses the classification of parasites, beginning with an overview of parasitology and definitions of key terms like parasite, host, and types of parasite-host associations.
2. Parasites are classified into three main phyla - Protozoa, Platyhelminthes, and Nemathelminthes. Protozoa are single-celled parasites while the latter two contain multicellular worms.
3. Key parasitic groups are described in more detail, including characteristics, examples of genera/species, and life cycles. This includes intestinal and tissue protozoa, cestodes, trematodes, and nematodes.
The document discusses how the COVID-19 pandemic has impacted demography. It notes that demography studies population size, birth/death rates, and composition. The pandemic has affected these areas through disproportionate infection and mortality rates along gender, age, and racial lines. Older individuals and those with preexisting conditions have higher mortality. The pandemic may also impact fertility slightly but transmission from mother to baby appears low.
this ppt is made by shrikrishna kesharwani , student of urban planning,4th year, Manit , Bhopal,
in this ppt, I have discussed how to do pandemic or epidemic management in detail.,
This document discusses the global burden of communicable diseases. Key points include:
- Communicable diseases cause a significant portion of deaths and disability worldwide, disproportionately affecting poor populations.
- Major communicable diseases discussed include tuberculosis, HIV/AIDS, malaria, polio, Ebola, neglected tropical diseases, and emerging/reemerging diseases like COVID-19.
- Effective control relies on prevention through vaccination, improved sanitation and hygiene, and treatment of infected individuals. Addressing social and economic determinants is also important.
impact of corona on aging population around the worldlavina tewani
The document discusses the impact of the COVID-19 pandemic on aging populations globally. It provides statistics showing that risk of severe illness and death from COVID-19 increases dramatically with age. For those over 70, Spanish data shows hospitalization rates of around 20%, ICU rates of 10%, and death rates of around 10%. The pandemic therefore presents a serious threat to the health and lives of older individuals.
Travel-related infectious diseases on the rise
International travel has an important role in the transmission of emerging and re-emerging infectious diseases across geographical areas.
Since 1980, the world has been threatened by different waves of emerging disease epidemics.
In the twenty-first century, these diseases have become an increasing global concern because of their health and economic impacts in both developed and resource-constrained countries.
It is difficult to stop the occurrence of new pathogens in the future due to the interconnection among humans, animals, and the environment.
As many as 43%–79% of travelers to low- and middle-income countries become ill with a travel-related health problem.
Although most of these illnesses are mild, some travelers become sick enough to seek care from a health care provider.
1. Infectious diseases are caused by microorganisms like bacteria, viruses, fungi or parasites that can be passed from person to person. They remain a leading cause of death worldwide.
2. The document discusses the routes of transmission for infectious agents, including direct contact, airborne transmission, and environmental survival of the infectious agent outside a host. Factors like these determine how quickly and widely an agent can spread.
3. Major infectious disease pandemics and epidemics throughout history have had significant social and economic impacts. The COVID-19 pandemic demonstrates how easily infections can spread globally in the modern, interconnected world.
This presentation provides an overview of COVID-19. It discusses the introduction of the virus, its structure and modes of transmission. It outlines the clinical presentation and diagnostic methods used. Prevention strategies discussed include personal protection measures and community involvement. Treatment currently focuses on isolation and supportive care as there is no cure. Globally, cases and deaths continue to rise with the US and several European countries most impacted. India's strategy included an early lockdown and producing hydroxychloroquine. The presentation notes some positive environmental impacts but also discusses conflicts around the origins and spread of the virus. It concludes that the situation remains serious and prevention relies on individual responsibility.
The document discusses emerging and re-emerging infectious diseases, their causes, examples, and strategies for prevention and control. Emerging diseases are caused by new pathogens while re-emerging diseases were previously controlled but have risen again. Factors contributing to emergence include human behavior, travel, microbial adaptation, and breakdown of public health measures. Examples provided include SARS, H1N1 influenza, Ebola, Zika, and Nipah virus. Prevention strategies involve controlling reservoirs, interrupting transmission, protecting susceptible populations, strengthening surveillance, and encouraging research. Public health authorities and doctors play key roles in awareness,
After months of deliberation, the World Health Organization has
declared COVID-19 a pandemic. As it seemed clear for quite some time, the virus will likely spread to most (if not all) countries on the globe. However, actions can still limit its impact.
This document discusses infectious diseases and healthcare-associated infections. It begins with an overview of hospital epidemiology and the roles of epidemiologists in identifying risks of infection and developing strategies to minimize those risks. Common sites of healthcare-associated infections are the urinary tract, respiratory tract, bloodstream, surgical wounds, and gastrointestinal tract. Factors that can promote healthcare-associated infections include prolonged use of medical devices, extremes of age, surgery and other procedures, immune status, understaffing, and poor infection control practices. The document then discusses measures for quantifying disease frequency like prevalence, incidence and case definitions.
Emerging and reemerging infectious diseasesarijitkundu88
Various emerging and reemerging diseases. Factors contributing to the emergence of infectious diseases. Antibiotic resistance. The global response to control them. Laboratories network in surveillance.
This document provides information about COVID-19 including its origin, spread, figures, features of an epidemic, types of epidemics, and the roles of common people, government, and advantages and lessons from the pandemic. It discusses that coronaviruses usually cause respiratory illnesses in humans and animals. COVID-19 is caused by the SARS-CoV-2 virus and was likely spread from animals to humans. It has now affected over 45 lakh people worldwide. The roles of common people, government, and advantages discussed include promoting social distancing, hygiene, lockdowns, increasing healthcare infrastructure, helping those in need, using this time for self-improvement, and bringing more unity.
This document provides definitions and discusses key concepts regarding communicable disease epidemiology. It defines epidemiology as the study of health-related states and events in populations. Communicable diseases are illnesses transmitted directly or indirectly between humans, animals, or from the environment. Studying communicable disease epidemiology is important due to changes in disease patterns, discovering new infections, and potential infectious origins of chronic diseases. Terminology discussed includes modes of transmission, hosts, vectors, reservoirs, incidence, prevalence, epidemics, pandemics, and eradication. Tuberculosis, HIV/AIDS, and avian influenza are then summarized as examples of significant communicable diseases.
Epidemic diseases are spread by insects passing on microorganisms like bacteria, viruses, and protozoa when they feed or bite. Mosquitoes in particular spread serious epidemic diseases such as malaria, yellow fever, African sleeping sickness, and West Nile virus. Malaria is one of the deadliest diseases worldwide, spread by the bite of the Anopheles mosquito between dusk and dawn across over 100 countries. Yellow fever is also spread by mosquitoes and causes varied symptoms with most improving after a few days but some experiencing liver and kidney failure. Vaccines exist for these diseases but are not always accessible in developing areas.
This document provides an overview of infectious disease epidemiology. It begins with a brief history of some major infectious disease outbreaks and their impacts. It then discusses concepts and definitions relevant to infectious disease epidemiology, including reservoirs, modes of transmission, epidemiological triad, and terminology. The document outlines the importance of studying infectious disease epidemiology and highlights current challenges like antimicrobial resistance and emerging/re-emerging pathogens. It also summarizes successes in disease eradication/elimination and the ongoing global burden of infectious diseases.
This document provides information about HIV/AIDS, including:
1) It describes HIV/AIDS, how it damages the immune system, and how treatment has allowed people to live longer before developing AIDS.
2) It outlines some common signs and symptoms of HIV/AIDS and explains how diagnosis is made through antibody testing.
3) It discusses various treatment options and lifelong implications of treatment, and highlights the lack of a cure.
The document discusses the Wuhan coronavirus outbreak that began in late 2019. It provides background on coronaviruses, noting they can cause illnesses from the common cold to more severe diseases like SARS and MERS. The new virus was discovered in Wuhan, China and is believed to have originated from a seafood market where live animals were sold. Symptoms include fever, cough and difficulty breathing. While the source is still unknown, bats and snakes are suspected. Standard recommendations to prevent spread include hand washing and avoiding contact with sick individuals.
1. The document discusses the origin theories of HIV/AIDS, including that it likely originated from chimpanzees in Central Africa and was spread to humans through the bushmeat trade.
2. International travel, like that of a Canadian flight attendant in the 1980s, helped spread HIV/AIDS from an epidemic to a pandemic.
3. While some controversial theories suggested vaccines or experiments spread HIV, analysis found no evidence of HIV in samples of the implicated vaccines.
Similar to The misunderstood epidemiological determinants of covid 19, problems and solutions (20)
Issues in Veterinary Disease Diagnosis.pptxBhoj Raj Singh
Diagnosis of a disease or a problem is the first step towards solution/ treatment/ control/ prevention.
Diagnosis is successfully. important to determine Prevalence (True prevalence, apparent prevalence) and Incidence of the disease to estimate the disease burden so that prevention and control measures can be planned and implemented.
However, in few years with the invasion of pharmaco-politics in disease control the term got vitiated.
Epidemiological Approaches for Evaluation of diagnostic tests.pptxBhoj Raj Singh
Diagnosis of a disease or a problem is the first step towards solution/ treatment. Clinical Diagnosis or Provisional Diagnosis is the first step in diagnosis and is done after a physical examination of the patient by a clinician. Clinical diagnosis may or may not be true and to reach Final diagnosis Laboratory Investigations using gross and microscopic pathological observations and determining the disease indicators are required. The diagnostic tests may be Non-dichotomous Diagnostic Tests (when continuous values are given by the test in a range starting from sub-normal to above-normal range) and Dichotomous Diagnostic Tests (when results are given either plus or minus, disease or no-disease). To make non- Dichotomous diagnostic test a Dichotomous one you need to establish the cut-off values based on reference values or Gold Standard test readings or with the use of Receiver operator characteristic (ROC) curves, Precision-Recall Curves, Likelihood Ratios, etc., and finally establishing statistical agreement (using Kappa values, Level of Agreement, χ2 Statistics) between the true diagnosis and laboratory diagnosis. Thereafter, the Accuracy, Precision, Bias, Sensitivity, Specificity, Positive Predictive value, and Negative Predictive value, of a diagnostic test are established for use in clinical practice. Diagnostic tests are also used to determine Prevalence (True prevalence, apparent prevalence) and Incidence of the disease to estimate the disease burden so that control measures can be implemented. There are several Phases in the development and use of a diagnostic assay starting from conceptualization of the diagnostic test, development and evaluation to determine flaws in diagnostic test use and Interpretation influencers. This presentation mainly deals with the epidemiological evaluation procedures for diagnostic tests.
Types of Trials in Medicine, vaccine efficacy or effectiveness trials and rel...Bhoj Raj Singh
The importance of learning about medicines’ and vaccines’ efficacy or effectiveness trials is not only necessary to those who are developing, producing or marketing these pharmaceutical products but to the users also because: The Emergency approval of Covid-19 vaccines and many other medicines in last few years has created so much fuss to understand the reality. The lesson learnt from Covid-19 vaccine(s) by vaccine production, marketing, vaccination and finally the revenue earned by vaccine developers and producers, and political gain by politicians, is proving deleterious to the society as several vaccine(s), useless or scarcely proven safe and useful, are going to infest and some have already infested the market (the health industry). So reading this presentation may be useful to you so that you may question the authorities if any is engaged in bluffing you. The presentation talks briefly about Prevention trials, Screening trials, Treatment trials, Feasibility studies, Pilot studies, Phases in clinical trial, Multi-arm multi-stage (MAMS) trials, Global Clinical Trials, Vaccine efficacy, Vaccine safety, Emergency Use Authorization (EUA), Serious Adverse Events (SAE), SEA rules, The Vaccine Adverse Event Reporting System (VAERS), Vaccine Safety Datalink (VSD), The Advisory Committee on Immunization Practices (ACIP), Clinical Immunization Safety Assessment (CISA), CDSCO Rules Governing Clinical Trials, Schedule Y, The Ethics Committee, Empowered Committee on Animal Health, Tracking Vaccine Quality, Pre-clinical and Clinical data, Proof of Concept, Biological License Application (BLA) and Clinical hold.
Detection and Characterization of Pathotypes, Serotypes, Biotypes, Phenotypes...Bhoj Raj Singh
This presentation of my lecture, to Epidemiology students, briefs about different methods for differentiating or finding similarities among isolates of pathogens required establishing causal associations in epidemiological disease diagnosis.
Epidemiology of antigenic, genetic and biological diversity amongst pathogens...Bhoj Raj Singh
This presentation briefly describes the Antigenic, genetic and biological diversity amongst pathogens, and their origin and emergence. It also discusses with their association with different forms associated with a disease/ outbreak. The presentation also enlists diversity in strains causing some common diseases of livestock in India.
Differentiation of field isolates (wild) from vaccine strains (Marker, DIVA &...Bhoj Raj Singh
Nowadays vaccination is often reported as the cause of disease outbreaks. To ward off this misconception (vaccines are made to save the masses not to risk their lives)or to understand vaccination failures, it is necessary to understand the difference between a field strain causing the disease and a vaccine strain having attenuated virulence. This presentation talks about DIVA and DISA vaccines too.
Lumpy skin disease (LSD) Globally and in India.pptxBhoj Raj Singh
LSD has emerged as a dairy industry devastating disease in India in the last four years. First noticed in Orrisa and is now present all over India. Recurring outbreaks are now noticed in Rajasthan, Uttarakhand and other states indicating that the disease is becoming endemic in India.
Molecular determinants of pathogenicity and virulence among pathogens.pptxBhoj Raj Singh
This document discusses molecular determinants of pathogenicity and virulence among pathogens. It defines pathogenicity as the potential ability of a pathogen to produce disease, and virulence as the degree of pathogenicity. It describes different types of pathogenicity tests (in vivo, in vitro, in silico) and factors that determine pathogenicity, including host susceptibility, presence of virulence factors, and environmental factors. It also discusses different types of virulence factors such as adhesins, invasins, toxins, and intracellular survival factors. It defines virulence genes and provides examples of adhesins, invasins, and toxins in Salmonella.
Molecular epidemiology and Disease causation.pptxBhoj Raj Singh
This short presentation describes molecular epidemiology, differentiate it from genetic epidemiology, and also deals with ascertaining the cause of disease.
My research proposals, to porotect holy cow, rejected by the ICAR-IVRI in the...Bhoj Raj Singh
The document discusses three research proposals submitted by the author to the ICAR-Indian Veterinary Research Institute over the last five years related to protecting holy cows. The proposals focused on (1) evaluating new therapies for brucellosis in cattle and buffaloes, (2) surveying infectious diseases in shelters for stray cows, and (3) studying epidemiological factors associated with reduced milk production from communicable diseases.
Animal Disease Control and Antimicrobial Resistance-A Message to Veterinary S...Bhoj Raj Singh
This presentation is for
• Introspection by all authorities before criticizing Veterinarians for an increase in AMR & to Doyens of Veterinary Science sitting mum when Vets are criticized!
• To realize that DAHD and State Animal/ Livestock Departments are:
– Fake data masters!
A realization to Doyens of Veterinary Science that they are:
– Spineless when their voice is the most needed!
– Don’t understand epidemiology to the least and make minimal attempts to improve Epidemiological understanding in veterinarians!
– The real negative thinkers!
– Suffering from an inferiority complex!
– Real killers of the holy cow!
– Interested to develop the best vet doctors but creating butchers!
– Real anti-nationals!
They talk of one health without understanding it!
– Much more!!!
Causes of Disease and Preserving Health in Different systems of Medicine.pptxBhoj Raj Singh
This presentation deals with concepts of disease causation and methods used for the alleviation of those causes to ensure health. It has briefed the causes of diseases according to Ayurvedic medicine, Unani medicine, Siddham medicine, Naturopathy, Homeopathy, Chinese medicine, Touch therapy- Reiki, Mantra therapy, and Allopathy. It also summarizes the treatments and practices in different systems of medicine. DOI: 10.13140/RG.2.2.30883.22569
AMR challenges in human from animal foods- Facts and Myths.pptxBhoj Raj Singh
This presentation talks about ÄMR: A public health threat, a “silent pandemic”.
Infections caused by Antimicrobial-drug-resistant (AMR) pathogens caused >1.27 million deaths worldwide in 2019 (low level or no surveillance) and increasing year after year which may be > million in coming decades. Covid-19 caused ~6.8 million deaths in >3 years but now the pandemic is ending but the AMR pandemic has no timeline for its ending. Many deaths are also attributed to AMR pathogens.
More antibiotic use (irrespective of the sector) = More AMR.
This presentation also talks about ways and means to mitigate the AMR pandemic. 1. Stopping the blame game. All are equally responsible for the emergence of AMR, the share of developed and educated communities is much more than poor and un-educated communities.
2. Working together: On-Line Real-Time AST Data Sharing Platform for different diagnostic and research laboratories doing AST routinely.
3. Implementing not only antibiotic veterinary and medical stewardship but antimicrobial production and distribution stewardship too.
4. Educating for Environmental health not only human, plant, and animal health.
5. AMR's solution is not in searching for alternatives to antibiotics but in establishing environmental harmony.
6. More emphasis on AMR epidemiology than on AMR microbiology and pharmacology.
7. Development of understanding that bacteria and other microbes are more essential for life on earth than the human race. Microbes can live without humans, but humans can’t without microbes.
Global-Health is of prime importance than economic growth/ greediness.
This document discusses herbal antimicrobials as an alternative to conventional antibiotics to address antimicrobial resistance (AMR). It provides information on the scope of AMR globally, including an estimated 1.27 million deaths directly attributable to resistance in 2019. The document then summarizes research on the antimicrobial properties of various herbs and oils, including carvacrol, ajowan oil, thyme oil, and cinnamaldehyde. It presents data on the susceptibility of different bacterial strains to these herbal antimicrobials. The document concludes by acknowledging limitations to the therapeutic use of herbal antimicrobials, such as a lack of quality control and defined therapeutic doses, but also their potential to be effective antimicrobial treatments.
Epidemiological characterisation of Burkholderia cepacia complex (Bcc) from c...Bhoj Raj Singh
The presentation is extracted from the thesis talking about
1. The presence of Bcc organisms in the clinical infections of animals.
2. Ultrasound gels as a potential source of pathogens, especially Bcc.
3. Multidrug resistance in BCCs.
4. Lack of regulatory guidelines in Indian Pharmacopeia as existing in USP.
There are hundreds of diseases of livestock and pet animals that can be printed through properly used quality vaccines. This presentation summarises different types of vaccines used by veterinarians to control/ prevent diseases. The presentation enlists the vaccine-preventable diseases of pets and livestock, and also the different vaccines used.
Major flaws in Animal Disease Control Leading to Partial Success or Failure.pptxBhoj Raj Singh
This presentation summarises major problems of Animal Disease Control Programs ongoing in India. India is a hyperendemic country for many animal diseases and zoonotic diseases. Every year billions of rupees are spent on disease control, surveillance, monitoring, and vaccination against vaccine-preventable diseases. However, due to the failure of most animal disease control programs for one or other reasons India directly losses about 20 and 25 thousand crores annually due to endemicity of FMD & brucellosis, respectively. The presentation identifies problems at different levels of different ongoing disease control programs in India. The non-availability of authentic disease data and flaws in vaccine quality control are the biggest problems.
Animal Disease Control Programs in India.pptBhoj Raj Singh
India is a hyperendemic country for many animal diseases and zoonotic diseases. Every year billions of rupees are spent on disease control, surveillance, monitoring, and vaccination against vaccine-preventable diseases. However, due to the failure of most animal disease control programs for one or other reasons India directly losses about 20 and 25 thousand crores annually due to endemicity of FMD & brucellosis, respectively. The presentation describes the pros and cons of different ongoing disease control programs going on in India.
Control and Eradication of Animal diseases.pptxBhoj Raj Singh
The presentation details different methods and terminologies used in disease management. It briefs about different types of disease control programs run at global, regional, and national levels. It also tells about the success and failure of different disease control programs. The presentation also briefed about methods of disease control.
The presentation summarises important methods and protocols of Clinical Microbiology. It may be useful to learners of Clinical microbiology at the undergraduate label. The presentation describes the procedures for collecting clinical samples, transport, and testing. It also describes the different methods of antimicrobial susceptibility testing and standards.
Osteoporosis - Definition , Evaluation and Management .pdfJim Jacob Roy
Osteoporosis is an increasing cause of morbidity among the elderly.
In this document , a brief outline of osteoporosis is given , including the risk factors of osteoporosis fractures , the indications for testing bone mineral density and the management of osteoporosis
- Video recording of this lecture in English language: https://youtu.be/kqbnxVAZs-0
- Video recording of this lecture in Arabic language: https://youtu.be/SINlygW1Mpc
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
Promoting Wellbeing - Applied Social Psychology - Psychology SuperNotesPsychoTech Services
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
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Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
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Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
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The misunderstood epidemiological determinants of covid 19, problems and solutions
1. The Misunderstood Epidemiological
Determinants of COVID-19:
Problems and Solutions
Epidemiology of COVID-19 is illusive.
It is less a disease but more a ‘political
disaster’ or a ‘Disease of Diagnosis’.
BR Singh
Pri. Scientist and Head
Division of Epidemiology, ICAR-IVRI,
Izatnagar-243122
1brs1762@gmail.com
2. Synopsis? Prologue!
COVID-19, a viral disease, fought with political means
for socio-economic gains, will keep on haunting
humanity for long. Without doing any epidemiological
study on COVID-19 we have determined its
modulators and determinants not to win over COVID-
19 but to create misunderstanding to persist for long
in inquisitive minds to blur the vision for novel
inventions. This presentation deals with COVID-19 in
general and misunderstood disease determinants in
particular to suggest possible means to win over the
disease. As the tip of COVID-19 iceberg is illusion and
reality unknown, thus the struggle is endless.
brs1762@gmail.com 2
3. >150000 people dying due to different
disorders daily
Deaths per million of
Indians per year
Food deficiency 21
Fires 22
HIV/AIDS 36
Malaria 40
Drowning 48
Diabetes 104
Suicide 156
Road accidents 171
Tuberculosis 402
Smoking 915
CVD 2820
In India: COVID-
19 Deaths till now
20/ M, Globally 78
Deaths by COVID,
~600 K in 6 months!!
California study
revealed that there is
0.13% case fatality
rate for COVID-19,
a little higher than
0.1% for common
flu
(https://www.vox.com/2020/4/24
/21229415/coronavirus-
antibody-testing-covid-19-
california-survey).
Have you ever
feared so much from
common flu or the
diseases at left and
right???
3brs1762@gmail.com
Worldwide daily deaths by
cause
CVD 48742
Cancer 26181
Respiratory diseases 10724
Lower Respiratory
infections 7010
Dementia 6889
Digestive diseases 6514
Neonatal disorders 4887
Diarrheal diseases 4300
Diabetes 3753
Liver Diseases 3624
https://www.weforum.org/agenda/2020/05/how-many-people-die-each-day-covid-19-coronavirus/
4. COVIDMania
• COVID-19 cases in India till date about a million in last six months may be 10
million by the end of year.
• About 27 000 people in India died due to COVID (?????) in last six month and
many more may, may be 100 K and about 0.6 million died all over the world.
• Have you ever thought: in India 15 million suffer from Malaria per year and 50
million are patients of Filaria (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5034168/).
• Every year 100 million poor die due to Dengue globally
(https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5034168/).
• Tuberculosis, a disease of poor, kills 1.5 million people worldwide with 6.4 million
new TB cases per year. (https://www.who.int/gho/tb/epidemic/cases_deaths/en/).
• In India, every year 440,000 (1205 people daily and more than 50 per hour) die
due to TB (https://tbfacts.org/tb-statistics-india/).
• In India, every year more than 230,000 people i.e., 630 daily (more than 26 per
hour) commit suicide due to one or other reason.
(https://economictimes.indiatimes.com/news/politics-and-nation/coronavirus-
india-must-do-more-genomic-sequencing-to-enable-faster-decision-
making/articleshow/74799884.cms), but no one cared!!!!
• Have you or the media or the global leaders ever worried about those poor people
or talked too much? No, because they are already big and
established pharmaceutical markets but to expand that market further. Every
progressive leader wants to have COVID-19. New era of sanitizers, masks, PPE
kits, new diagnostics, old drugs repurposed, new drugs launched, vaccines eagerly
awaited.
4brs1762@gmail.com
5. Global fight with COVID-19
• Fighting COVID-19= Fighting with the unknown
• No lineage
• No address
We have only
Data to create panic
Panic with motive
Motive, economic and political gains (advantage)
Advantage of individuals not of masses.
Masses are fooled as ever before.
5brs1762@gmail.com
6. Overview of Epidemiology of COVID-19
• Ignored since very first day.
• Non-epidemiological data, just numbers.
• R0 values: Fluctuating (1.5-6.7).
• Morbidity: Not yet known, from 0.0003-3.7% (~0.38%)
• Mortality: Skewed, 1- 845/ M (~0.015%).
• CFR: Biased, 0.0 to 36.2% (~6.16%)
• Herd immunity: Illusive (Sweden and California studies, 5-17%).
• Immunity after Infection: Short lived (<3 months in ~80%).
• Treatments: Taali, Thaali, Shankhnaad (शंखनाद), Deepawali, to
hundreds of the known and unknown medicines.
• Protection: Mask, Social distancing, Immune boosters, Tonics
from Dadi Maa and Nani Maa to Yogi and Jogi Babas, dietary
changes and supplements, and Ganda-Tabeej too.
• Vaccine(s): Coming soon.
6brs1762@gmail.com
7. Epidemiological studies on COVID-19
• Hardly few: That too mostly targeted to see the future of vaccine(s)
or clinical trials (in haste) towards repurposing of drugs.
• Most of the studies are either
– Ecological (not fully ecological too) or
– Clinico-pathological (even without proper understanding of
pathology) or
– Clinical trials of already disputed medicines,
– Vaccine trials (in infancy but promising adulthood).
• Some studies claim to determine several Modulators and
Determinants of the disease as an outcome of play with non-
epidemiological data in leisure time under lockdown including
– Median age of population,
– BCG vaccination status,
– Even religion has been linked with morbidity/ mortality and CFR
– Several co-morbidities
– Socioeconomic factors
7brs1762@gmail.com
8. Determinants of the COVID-19
• ‘Politics’ (at all levels starting from non-political WHO to village
level), overruled all real determinants of the COVID-19.
• Panic: From Tabligi to Mass dislocation, Church to Mosque,
Temple to Gurudwara, Sahitan to GOD, Birth to Death, Marriage to
Funerals.
• Game of numbers. Don’t know for what, that is why it is a
political disease or disease of targeted testing.
• Information or misinformation war: On scientific platforms
(>67K publication within less than six months), publishing and
online media, social and anti-social media, socioeconomic and
sociopolitical platforms.
• The most important determinant is the “the market” made
ready to accept just any vaccine, any medicine, either effective
for a month, two months, three months or not at all, just safe as
“normal Saline”.
• Pharmaceuticals: Public and Private, Local-Vocal-Global;
Allo:Homeo:Ayush:Unani:Chinese:African:Yoga, and
Decoctums and Infusions of all.
8brs1762@gmail.com
9. Misunderstood determinants of COVID-19
• Etiology: Controversy over its origin
• Spread & Expansion
• Determinants and factors of
– Morbidity
– Mortality
– CFR
9brs1762@gmail.com
10. Spread of COVID-19
• Communicable through human to human contact, human to animal contact
but we don’t know the exact role of animals, foods, meats, vegetables and
fruits, and environment (air, water, soil, house flies and other flying swabs). We
are fighting with an enemy without knowing even its proper address.
• Faeco-oral transmission of Coronaviruses (epidemics known in pigs and
humans earlier) but no-one is ready to accept that this may also be important
for SARS-CoV-2 also. Probably we have lost the fight in our mind even before
fighting it.
• Survival of the virus for several weeks in ship cabins documented, still claim
that the virus may survive for a few hours or a day or two on common surfaces
and air and not spread through news papers.
• The virus is detected in water and sewage but we are trying to run away from
the facts and happy to live in lockdown, it is like an ostrich keeping its head
hiding in sand to think that there is no danger.
• Several conflicting statements at level of WHO and different disease control
institutions regarding spread of disease my be either due to ill-knowledge
about the disease or intentional with some political motives.
• All good attempts are made by most of the powerful countries to spread the
disease globally through intentional import and export of potential spreaders
of the disease by one or other means, and then politicizing the spread in
different ways, made it as a political disaster rather than a pandemic of a viral
disease.
10brs1762@gmail.com
11. Politics of COVID-19 Transmission
• Disease not spread through human to human contact, WHO.
• Infected people can be contagious well before experiencing
symptoms.
• "Some modeling studies suggest 40-60% of spread is from people
when they didn’t have symptoms”, Ashish Jha, the Brown School of
Public Health.
• Singapore's Corona-virus task force: Released an animation of
demonic spread of COVID-19.
• Maria Van Kerkhove (@mvankerkhove, Infectious Disease
Epidemiologist; COVID-19 Technical Lead, WHO Health
Emergencies Programme tweeted on 8-6-20 “transmission from
asymptomatic individuals are difficult to conduct, but the
available evidence from contact tracing reported by the Member
States suggests that asymptomatically-infected individuals are much
less likely to transmit the virus than those who develop symptoms”.
• It is not Zoonotic, no role of animals in disease spread (though
Cats, dogs, tigers, monkeys suffered and mink transferred
infection to half a dozen people???)
11brs1762@gmail.com
12. Iceberg of COVID-19
• Except a few isolated attempts no country has attempted to determine
the disease iceberg required to estimate the required efforts to contain
the disease.
• To determine the extent of COVID-19 disease iceberg we need to use
antibody tests extensively with well designed sampling plan using one
or more tests with high sensitivity and specificity.
• We are fighting with the tip of the COVID-19 iceberg and destined to
crackdown under lockdowns.
• Direct losses due to COVID-19 in form of sick and dead is only tip of
the iceberg of economic disease probably leading to economic paralysis
after extended lockdowns and partial closures all over the globe which
may be killing billions due to our madness to save a few million people
already approaching towards there end due to several co-morbidities
or have already spent their productive life decades ago.
• There is an urgent need to think scientifically, this disease is here to
teach the lesson again once taught by Darwin, “Survival of the fittest”.
• As the world is ruled mostly by those have enjoyed their productive life
but want to rule till their end or they consider themselves endless
(Rawans). For those inhumane we are posing humane to display
humanity & forget the of the coming generations and poor of this
world constituting more than 90% of the humans of the globe.
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13. Determinants????
Correlation of COVID-19 and Median Age of Nations
Cases/ Million 0.153708
Deaths/ Million 0.343575
CFR 0.104797
%Positivity -0.12684
Looks Convincing: 47 countries, median age ≥40 yrs, 13.6% of global
population (GP) but 19.7% global COVID-19 cases and 34.4% deaths,
6.76% CFR,138/Million mortality.
But nine of such countries had 3.7% GP, have less than 5 deaths per million
with 0.7% of cases and 0.25% of deaths.
In 37 countries with median age <20 yrs, with 13.8% GP, mortality is
10/ Million.
https://www.cia.gov/library/publications/the-world-factbook/fields/343rank.html
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15. BCG facts????
http://www.bcgatlas.org/index.php
• More of Convincing figures: 181 countries with 89.5% GP uses
mandatory childhood BCG vaccination, holds 61.5% COVID-19
cases and 45.7% COVID-19 deaths.
• 29 countries not mandating BCG use holds 10.5% GP but 38.5
% COVID-19 cases and 54.3% of COVID-19 deaths.
• Of the 29 Non-BCG user countries, eight (Australia, Cyprus,
Falkland Islands, Iceland, Israel, Liechtenstein, Luxembourg,
Vatican City) holding 0.5% of GP, 0.5% of cases but 0.1% of
deaths have CFR <2.5.
• Six BCG mandating Nations (Guatemala, 22.4; Honduras, 19.4;
Hungary, 15.6; Mexico, 15.5; Yemen, 38.8) holding 2.5% GP,
2.8% of COVID cases and 6.9% of deaths have CFR >15%.
• 50 BCG user countries having CFR<1%, have hold 7.9% GP,
7% of cases and 7.4% deaths.
15brs1762@gmail.com
16. Other disease vaccinations and
COVID-19 correlations
Use of vaccines
(percent population
vaccinated)*
Cases/M Deaths/M CFR %Positivity
BCG -0.1946 -0.51973 -0.23593 0.021372
DPT 0.177646 0.14664 -0.03692 -0.05969
HiB 0.132929 0.143603 -0.01581 -0.04473
Hep B 0.152188 0.05744 -0.06833 -0.04953
RotaVirus 0.051192 -0.06316 -0.11059 -0.06685
Polio 0.190457 0.166946 -0.09053 -0.0704
MCV1 0.206216 0.159052 -0.10478 -0.08398
MCV2 0.208169 0.115188 -0.17265 -0.15418
*https://apps.who.int/gho/data/node.main.A830?lang=en
16brs1762@gmail.com
17. Religion of COVID-19?????
COVID-
19
Among different nations Correlation of Percent
of population following
Christians Muslims Hindus Buddhist No
Religion
Cases/
Million
0.021435 0.035733 -0.0160 -0.10694 -0.01981
Deaths/
Million
0.220773 -0.21897 -0.0802 -0.10571 0.190216
CFR 0.100398 0.027791 -0.0802 -0.1697 0.066224
% Positivity -0.14913 0.209867 -0.0221 -0.03597 -0.07566
Source of religious structure:
https://www.pewforum.org/2015/04/02/religious-projection-
table/2010/number/all/
https://en.wikipedia.org/wiki/List_of_religious_populations 17brs1762@gmail.com
18. Co-morbidities and COVID-19
Burden of different
diseases in countries
(https://www.who.int/whr/1996/m
edia_centre/press_release/en/)
COVID-19 parameters
Cases/ M Deaths/ M CFR % Positivity
TB* -0.23476 -0.25826 -0.08493 -0.03144
HIV* -0.14436 -0.19381 -0.05991 -0.01834
Malaria* -0.19472 -0.21022 -0.04352 -0.01632
Cardivascular
Diseases
-0.24721 -0.37427 -0.06367 0.183927
Neoplasm 0.163798 0.424877 0.082375 -0.11024
Diabetes 0.185606 -0.06568 -0.08287 0.235771
Smoking -0.16383 -0.09376 -0.06138 -0.10989
18brs1762@gmail.com
*That is why we don’t want to control other infectious disease. Who will
protect us in future from COVID-19 like diseases? Keep on smoking!!!!
19. COVID-19 and Basic amenities and
their indicators in Nations
COVID
Parameters
Correlation of COVID-19 with availability of Basic
amenities and their indicators in Nations
Food
deficiency*
Water and
Sanitation
spending
Healthy life
expectancy
Literacy
rate
#PPP$
Cases/M -0.22351 -0.12252 0.314848 0.22646 0.43915
Deaths/M -0.22378 -0.08841 0.409375 0.256456 0.31057
CFR -0.01284 -0.06721 0.050487 -0.03145 -0.0645
% Positivity -0.02146 -0.05846 -0.15289 -0.16615 -0.1026
19brs1762@gmail.com
*Reduction in prosperity is must to curb the COVID-19, that is why you are
under lockdown. Keep on fasting to be at safe hand from COVID-19!!!!
20. Common Solutions
Cure the panic
• Live and let live, like most of less-severe diseases, COVID-19 has to live on this earth for
long, so we have to accept it as cohabitant on the earth.
• Coronization of the world as soon as possible using some less pathogenic and more
contagious virus, we may wait till the nature invent such or some scientist(s) do it.
• Forgetting at the earliest that some vaccine will come and save the world in real time.
Even if one or many are made available in time to come that is destined to fail in
containing the disease for years to come. Failing vaccination and repeated outbreaks of
age old diseases is lesson to be learned at the earliest.
• Treatments for viral diseases are failing since ages, it may be useful for some
economically able to afford it but at large always failed.
• Respecting the Nature and its forces, and accepting the fact that we are not supreme.
• As it is a political disaster, the best strategy is avoiding the politicizing of the numbers of
targeted diagnostic tests. And their results and boasting the imaginary successes.
• As it is also a disease of diagnosis, another important strategy is either ‘Stop diagnosis’
or ‘Stop public display’ of the numbers now updated in real time.
• Displaying numbers appears to be a political strategy to create panic among masses (for
one or other gain), the importance should be given to ward of panic of numbers.
• As one of the most important determinant of COVID-19 is information or
misinformation war in media, on social media and sociopolitical platforms if we can put
a break on it or stop for some period instead of lockdown the disease will be controlled in
much less time and with less economic implications. 20brs1762@gmail.com
21. Epidemiological solutions
• Through clinical observations we know the most vulnerable population for
COVID-19 morbidity and mortality (aged, people with underlying diseases and
compromised immunity), our target should be to save those vulnerable people.
• In healthy population, young and adults, the disease is either unapparent or
mild, therefore they should be allowed for free movement to work and spend
leisure life so that the herd immunity (???) can be created at the earliest.
• Natural infections are better creators of immunity than any of the best vaccines
thus, we should actively promote that most of the healthy and young population
contract the infection time and again for solid and lasting immunity.
• Even after natural infections immunity is vanishing fast (UK Studies, in 3 months
83% become un-protected) then it is not possible to predict the efficacy of any
vaccine unless repeated frequently, then best is to allow the disease to be
endemic.
• Though contradicted, the disease also spread through asymptomatically infected
people (young and adults) thus their contact with vulnerable be stopped to the
maximum.
• Educating the people with reality (still unknown) may be other best tool to
control the disease because disease is more a created panic than the virus itself.
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