Diphtheria is an infectious disease caused by the Corynebacterium diphtheriae bacteria that affects the upper respiratory tract. It is characterized by a grey membrane that can grow in the throat and make it difficult to breathe. While it was once a leading cause of childhood death, diphtheria can now be prevented through a vaccine. The vaccine is typically administered in combination with tetanus and pertussis vaccines. It works by producing antibodies that neutralize the toxin produced by the bacteria.
Chickenpox -symptoms |tests |management ( medical information ) martinshaji
Chickenpox is a highly contagious viral infection that causes an acute fever and blistered rash, mainly in children.
The name may be derived from the French term for chick pea, chiche pois. Another theory is that the word 'chicken' was derived from a slang term for 'child'. Chickenpox is also known as varicella.
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Chickenpox -symptoms |tests |management ( medical information ) martinshaji
Chickenpox is a highly contagious viral infection that causes an acute fever and blistered rash, mainly in children.
The name may be derived from the French term for chick pea, chiche pois. Another theory is that the word 'chicken' was derived from a slang term for 'child'. Chickenpox is also known as varicella.
please comment
thank you ...
A research on diphtheria. How it occurs and how many peoples are suffers from this disease . S brief description on diphtheria, symptoms treatment , test, and Prevention etc.
Diseases o respiratory system
In humans the respiratory tract is
the part of the anatomy that has to
do with the process of respiration.
The respiratory tract is divided into
3 segments:
Upper respiratory tract: nose and nasal passages, paranasal sinuses, and throat or pharynx
Respiratory airways: voice box or larynx, trachea, bronchi, and bronchioles
Lungs: respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli
In humans the respiratory tract is
the part of the anatomy that has to
do with the process of respiration.
The respiratory tract is divided into
3 segments:
Upper respiratory tract: nose and nasal passages, paranasal sinuses, and throat or pharynx
Respiratory airways: voice box or larynx, trachea, bronchi, and bronchioles
Lungs: respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli
Diphtheria is an infection caused by the bacterium Corynebacterium diphtheriae. Diphtheria causes a thick covering in the back of the throat. It can lead to difficulty breathing, heart failure, paralysis, and even death. CDC recommends vaccines for infants, children, teens and adults to prevent diphtheria. The presentation consists of basic concepts regarding the bacteria and its infection. It has explanation in detail about signs and symptoms of Diptheria
Epidemiology and Control Measures for Diphtheria AB Rajar
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This lecture is about the Epidemiology and Control Measures for Diphtheria,I do believe that this one will be helpful for undergraduate medical students.
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1. Diphtheria
Introduction
• Diphtheria takes its name from the Greek word diphtheria meaning leather and was named
in 1826 by French physician Pierre Bretonneau.
• This is because it refers to the leathery, sheath- like membrane that grows on the tonsils,
throat and in the nose.
• In the past its name (general disease, killer disease) because no treatment in the past and
it was lead high mortality between children
• It was said that the disease killed as many as 80% of the children below 10 years
Definition
• Diphtheria is an acute infectious disease that typically strikes the upper respiratory tract
including the throat. It is caused by infection with the bacteria Corynebacterium diphtheria.
It’s characterized by sore throat and mild fever at first.
As the disease progresses, a membranous substance forms in the throat that makes it
difficult to breathe and swallow.
Causes
• Corynebacterium diphtheriae causes diphtheria. Usually the bacteria multiply on or near
the surface of the mucous membranes of the throat, where they cause inflammation.
• The inflammation may spread to the voice box (larynx) and may make your throat swell,
narrowing your airway. Disease-causing strains of C. diphtheriae release a damaging
substance (toxin), which can also involve the heart, brain and nerves.
Signs and symptoms
Signs and symptoms usually begin two to five days after a person becomes infected.
• A sore throat and hoarseness
• Painful swallowing
• Swollen glands (enlarged lymph nodes) in your neck
• A thick, grey membrane covering your throat and tonsils
• Difficulty breathing or rapid breathing
• Nasal discharge
• Fever and chills
Skin (cutaneous diphtheria)
• It is found in people with poor hygiene. Any break in the skin can become infected with
diphtheria. The infected tissue develops an ulcerated area and a diphtheria membrane may
form over the wound but is not always present. It is slow to heal and may be insensitive
when touched.
Complications
• Breathing problems: Diphtheria-causing bacteria may produce a toxin. This toxin
damages tissue in the immediate area of infection — usually, the nose and throat. At that
site, the infection produces a tough, grey-coloured membrane composed of dead cells,
bacteria and other substances. This membrane can obstruct breathing.
• Heart damage: The diphtheria toxin may spread through bloodstream and damage other
tissues in your body, such as heart muscle, causing inflammation of (myocarditis).
2. It may be slight, showing up as minor abnormalities on an ECG, or severe, leading sudden
death.
• Nerve damage: The toxin can also cause nerve damage. Typical targets are nerves to the
throat, where poor nerve conduction may cause difficulty swallowing. Nerves to the arms
and legs also may become inflamed, causing muscle weakness. Toxin may damages the
nerves that used in breathing muscles and become paralyzed. Respiration become
impossible without device.
• Renal: The diphtheria toxin may damage the kidneys, affecting their ability to filter
wastes from the blood. This leads to renal failure.
Transmission
• Person-to-person transmission occurs through oral or respiratory droplets, close physical
contact.
Tests and diagnosis
• Diphtheria can be diagnosed usually by proper clinical examination, throat culture from
the infected area and blood tests.
• Tests used may include:
→ Gram stain or throat culture to identify Corynebacterium diphtheria.
→ ECG
Treatment
Antitoxin - After doctors confirm diphtheria, the infected child receives an antitoxin. The
antitoxin, injected into a vein or muscle, neutralizes the diphtheria toxin already circulating
in the body.
Antibiotics - Diphtheria is also treated with antibiotics, such as penicillin or erythromycin.
Antibiotics help kill bacteria in the body, clearing up infections.
3. Prevention
• Diphtheria is easily prevented with the use of a safe and effective vaccine.
• Most people receive their first vaccination for the disease as children. This is know as the
DTP vaccine (diphtheria-tetanus- pertussis).
Vaccination
• DPT (Diphtheria, Pertussis, Tetanus) 3-in-1 vaccine
• DT (Diphtheria, Tetanus) 2-in-1 vaccine; no Pertussis
• TD (Tetanus, Diphtheria) 2-in-1 vaccine for adults
Summary
• Diphtheria is a highly communicable, acute bacterial infection.
• It was once a leading cause of death among children.
• The germ produces a toxin that can spread from the site of infection to other tissues in the
body.
• Diphtheria usually affects the throat and nose. But, in more serious cases, it may affect
the nervous system and heart.
Conclusion
• We recommended primary course of vaccination is at 2, 4 and 6 months of age.
• Vaccination against diphtheria is part of the National Immunizations Program (NIP)
schedule, and use of this vaccine has made diphtheria extremely rare in areas of the
developed western world where most people are immunized against the disease.