This document summarizes a group project on Chikungunya virus, covering its discovery, transmission by mosquitoes, morphology, replication process in the body, common symptoms, diagnosis methods, treatment approaches, prevention recommendations, prognosis, and concluding facts about the virus. It is submitted by 8 students to their professor and contains 6 sections on various aspects of
This webinar is organized by MyICID and Institute for Clinical Research (ICR), NIH, Ministry of Health in conjunction with Neglected Tropical Disease Day 2022. The purpose of this webinar is to refresh and update our knowledge on Dengue fever, which has been overshadowed by COVID-19 since the beginning of the pandemic.
Presenter: Dr Ong Hang Cheng, Infectious Disease Physician at University Malaya Medical Center
#dengue #WorldNTDDay #BeatNTDs #BestScienceforAll
This webinar is organized by MyICID and Institute for Clinical Research (ICR), NIH, Ministry of Health in conjunction with Neglected Tropical Disease Day 2022. The purpose of this webinar is to refresh and update our knowledge on Dengue fever, which has been overshadowed by COVID-19 since the beginning of the pandemic.
Presenter: Dr Ong Hang Cheng, Infectious Disease Physician at University Malaya Medical Center
#dengue #WorldNTDDay #BeatNTDs #BestScienceforAll
West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. It causes disease in humans, horses, and several species of birds
World Mosquito Day - Fight the Bite with PrideEPIC Health
Mosquitoes can transmit many diseases, ranging from mild to the life threatening ones. Check out these slides to learn ways to fight and prevent disease borne by mosquitoes https://www.epicpc.com/news/infographics/world-mosquito-day/
Influenza vaccines or flu shots protect against influenza. A new version of the vaccine is developed twice a year as the influenza virus rapidly changes. Their effectiveness varies from year to year, most provide modest to high protection against influenza.
The information regarding the dengue fever, Introduction, epidemiology, aetiology, symptoms, general management and prevention , along with one example of the journal club.
West Nile fever is an infection by the West Nile virus, which is typically spread by mosquitoes. It causes disease in humans, horses, and several species of birds
World Mosquito Day - Fight the Bite with PrideEPIC Health
Mosquitoes can transmit many diseases, ranging from mild to the life threatening ones. Check out these slides to learn ways to fight and prevent disease borne by mosquitoes https://www.epicpc.com/news/infographics/world-mosquito-day/
Influenza vaccines or flu shots protect against influenza. A new version of the vaccine is developed twice a year as the influenza virus rapidly changes. Their effectiveness varies from year to year, most provide modest to high protection against influenza.
The information regarding the dengue fever, Introduction, epidemiology, aetiology, symptoms, general management and prevention , along with one example of the journal club.
Power point presentation on Chikungunya fever.
Topics covered: Introduction, CHIKV virus classification, structure and replication cycle, Clinical syndrome, diagnosis, prevention and treatment,epidemiology and antiviral therapy.
Influenza, zika, ebola in pregnancy by dr alka mukherjee nagpur m s indiaalka mukherjee
Viral infections in pregnancy are major causes of maternal and fetal morbidity and mortality. Infections can develop in the neonate transplacentally, perinatally (from vaginal secretions or blood), or postnatally (from breast milk or other sources). The clinical manifestations of neonatal infections vary depending on the viral agent and gestational age at exposure. The risk of infection is usually inversely related to gestational age at acquisition, some resulting in a congenital malformation syndrome.
Infections known to produce congenital defects have been described with the acronym TORCH (Toxoplasma, others, rubella, cytomegalovirus [CMV], herpes). The "others" category has rapidly expanded to include several viruses known to cause neonatal disease
Pregnant women, their fetuses, and infants are at a high risk of exposure to infectious diseases, especially in low-income regions of the world where vaccine-preventable diseases are prevalent. Vaccines administered during pregnancy can protect not only pregnant women against infection-related morbidity and mortality, but also their fetuses and infants against preterm delivery, perinatal death, and disability. viral infections and human rights.
Pregnant women, their fetuses, and infants are at a high risk of exposure to infectious diseases, especially in the resource-poor and low-income regions of the world where vaccine-preventable diseases are prevalent. Because of this, vaccines administered during pregnancy offer the potential to protect not only pregnant women against infection-related morbidity and mortality, but also their fetuses and infants against preterm delivery, perinatal death, and disability. The potential benefits of providing immunization to pregnant women and their infants to protect against infection are not a novel concept—even during the early development of vaccines, their usage during pregnancy was considered potentially beneficial.
Arthropods form a major group of disease vectors with mosquitoes, flies, sand flies, lice, fleas, ticks and mites transmitting a huge number of diseases.
Chickengunia in pregnancy by dr alka & dr apurva mukherjee nagpur m.s. indiaalka mukherjee
assoChikungunya fever (CF) is an arboviral disease in worldwide expansion due to the plasticity of its pathogen and vector. Chikungunya virus (CHIKV), a positive-sense, single-stranded RNA alphavirus, is transmitted by Aedes (Stegomyia) aegypti and Aedes albopictus mosquitoes, two hegemonic anthropophilic day-biting mosquitoes capable of colonizing very different environments. This expert review discusses the molecular epidemiology, pathophysiology, clinical features, diagnosis, management, and prevention of CF during pregnancy, infancy, and childhood. Specifically, it will focus not only on the issue and challenges of perinatal mother-to-child transmission of CHIKV, its pathogenesis, and effects on neurodevelopment, but also on CHIKV-associated central nervous system disease in children, two previously ill-characterized features of the infection.
Nipah Virus (NiV) is a negative sense, single stranded, enveloped RNA virus.
Zoonotic virus
Family – Paramyxoviridae
Genus - Henipavirus
It is a BSL-4 pathogen.
The name "Nipah" refers to the place, Sungai Nipah (literally 'nipah river') in Malaysia, the source of the human case from which Nipah virus was first isolated.Nipah virus can remain viable for a few days in few fruit juices or mango fruits, and at least 7 days in palm milk.
Bats act as a breeding ground for many dangerous viruses, including Nipah, rabies, and Marburg viruses. Such viruses are not associated with any major pathological changes within the bat population.
Transmission of NiV occurs by eating contaminated food. Risks include contact, touch, breastfeeding, or exposure to an infected person, thereby making it easier to come in contact with a droplet of NiV infection.
More recently, experimental studies with aerosolized NiV in Syrian hamsters have found that NiV droplets (aerosol distribution) may cause NiV transmission during close contact. Drinking fresh palm milk is a very common method, and the use of Tari (ripe palm juice) is a powerful way to transmit the virus.
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
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Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
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These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
5. Chikungunya Virus
● Single stranded RNA Alphavirus.
● Transmitted to humans by mosquito bites.
● Chikungunya word is from Makonde language in
Tanzania which means “that which bends up.”
● It refers to the bent posture of patients due to
severe joint pain.
6. ● ChikV uses Aedes genus mosquitoes as vectors.
● Rodents, birds and buffalos are also thought to be the
vectors.
● Further spreads in the autochthonous cycle.
● In Africa ChikV used Aedes Aegypti as vector but in Asia,
Indian Ocean and Europe A. albopictus was reported as
vectors.
7. Discovery
● In 1952, first case was reported in Makonde
plateaus in Tanzania.
● RW Ross isolated the virus from the serum of febrile
patients and mosquitoes in 1953.
● Again in 1958 ChikV outbreak was reported in
Bangkok, Thailand.
● In 2019, Asia and America were the most affected
by chikungunya (Pakistan reported 8378 cases).
9. ● CHIKV belongs to the genus Alphavirus, family Togaviridia.
● It is a small, spherical, enveloped icosahedral capsid virion,
and are 60-70 nm in diameter.
● The size of virus is medium as per virus standards i.e 100
angstrom diameter.
● At the center of virion is the nucleocapsid core of ~35nm in
diameter, composed of C protein in complex with the viral
genome.
10. Genetic material:
● The virus has a positive-sense, single-stranded RNA genome of
CHIKV is about 11.7kb
● It encodes 2 open reading frames (ORF), separated by 5’ and 3’
untranslated region.
● RNA virus able to evolve rapidly and expand vector.
11. ● Four non-structural proteins at 5’ end: nsp1, nsp2, nsp3, nsp4.
● Five structural proteins at 3’ end: Three glycosylated proteins, E1,E2, E3, a small
64 amino acids glycoprotein 6k; One non-glycosylated nucleocapsid protein C.
● The surface of this positive-stranded RNA alphavirus is covered with 80 trimeric
glycoprotein spikes.
12. ● The E1 and E2 glycoprotein form heterodimers and assemble into
spikes on the surface.
● Which facilitates viral access into the host cell
17. ● Majority of people infected with the virus will have symptoms.
● 3 to 28 percent of people infected with chikungunya will remain
asymptomatic, according to the Centers for Disease Control and
Prevention.
● The first sign of chikungunya will typically be a high fever (typically
above 102 degrees F), followed by a rash.
● Onset of illness usually occurs 4 to 8 days later (but the range can be
2 to 12 days.
19. ● Conjunctivitis (Pink or red color in the white of the eyes)
● Swelling of the conjunctiva (the thin layer that lines the
white part of the eye and the inside of the eyelid) and/or
eyelids).
● Maculopapular rash (characterized by a flat red area on the
skin covered with elevated bumps)
21. Diagnosis
● See your healthcare provider if you have visited an area where
chikungunya is found and have symptoms described above.
● Tell your healthcare provider when and where you traveled.
● Your healthcare provider might order blood tests to look for
chikungunya or other similar viruses like dengue.
22. Several methods can be used for diagnosis:
● Enzyme-linked immunosorbent assays
(ELISA), may confirm the presence of IgM and
IgG anti-chikungunya antibodies.
23. Medical treatment:
• paracetamol to reduce fever and
pain.
• Injection Voveron 3ml (powerful
analgesic painkiller).
• It relieves pain in muscles and
joints.
Self-treatment:
• Get plenty of rest.
• Drink fluids to prevent
dehydration.
• Eat Healthy
Treatment
24. Different types of CHIKV vaccines have recently been developed. However,
there is still no licensed vaccine or treatment available.
Vaccines
● Subunit vaccines
● Whole-virus inactivated vaccine
● Formalin-inactivated vaccines
● DNA vaccines
● Pseudoinfectious virus
● A single-dose insect alphavirus-
vectored vaccine
● LAVs - live attenuated vaccines
26. ● Use insect repellent which are
proven to be safe and effective
● Dress your child in clothing
that covers arms and legs. ● Cover strollers and baby
carriers with mosquito netting.
● Always follow label instructions
on insect repellent
1. Protect yourself and Your Family from mosquitoes Bites
27. ● Wear long-sleeved shirts and long pants
● Use 0.5% permethrin to treat clothing and gear (such as boots,
pants, socks, and tents) or buy permethrin-treated clothing and
gear.
● Permethrin is an insecticide that kills or repels mosquitoes.
● Read product information to find out how long the protection will
last.
● If treating items yourself, follow the product instructions.
28. Take these things while travelling:
● EPA (Environmental Protection Agency) registered insect
repellent.
● Clothes which can cover your whole body.
● Clothes and gear treated with 0.5% Permethrin.
● Stay in a room or a lodging with proper air conditioning
system and screen doors.
● Use Permethrin-treated net for sleeping outside.
2. Prevent Mosquito Bite while Traveling
29. ● To keep mosquitoes outside, fold the net under the
mattress.
● Select a long mosquito net.
● Check the net for any breaches or holes.
● Avoid sleeping right up against the net.
● The net must not be hung close to candles, cigarettes, or
open flames because it may catch fire.
Do not travel to those areas where the chances of being
infected with Chikungunya are very high.
30. Prognosis
● Mortality rate of
Chikungunya is slightly
less than 1 in 1000.
In 2022, and as of 24
August, 229 029 cases and 41
deaths have been reported.
● Those over the age of 65, neonates, and those
with underlying chronic medical problems are
most likely to have severe complications.
● Neonates are vulnerable as it is possible
to vertically transmit chikungunya from
mother to infant during delivery, which results
in high rates of morbidity, as infants lack fully
developed immune systems.
32. Included in the
Neglected Tropical
Diseases.
The virus may cause
encephalitis, a disease of
the central nervous
system.
33. ● Viral disease transmitted to humans by infected mosquitoes.
● Currently no licensed vaccine or specific drug against the virus.
● Shares some clinical signs with dengue and Zika, and can be misdiagnosed.
● The proximity of mosquito breeding sites to human habitation is a significant risk
factor for chikungunya.
● Vaccination of the susceptible population is a powerful method to control infection.
“Prevention is better than cure.”
Conclusion