Does Bordetella pertussis have a capsule?

Asked By: Irmtraud Saini | Last Updated: 9th June, 2020
Category: medical health vaccines
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The production of a capsule in Bordetella pertussis, the etiologic agent of whooping cough, has remained controversial; earlier studies reported this pathogen as a capsulated microorganism whereas the recent B. pertussis genome analysis revealed the presence of a truncated capsule locus.

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Subsequently, one may also ask, is Bordetella pertussis encapsulated?

Bordetella pertussis is a Gram-negative, aerobic, pathogenic, encapsulated coccobacillus of the genus Bordetella, and the causative agent of pertussis or whooping cough. Humans are the only known reservoir for B. pertussis.

Furthermore, where is Bordetella pertussis found in the body? Bordetella pertussis causes the disease, and is not found in any animal or environmental reservoirs, but resides in the mouth, nose, and throat of humans (1).

Considering this, is Bordetella pertussis a virus or bacteria?

Pertussis, a respiratory illness commonly known as whooping cough, is a very contagious disease caused by a type of bacteria called Bordetella pertussis. These bacteria attach to the cilia (tiny, hair-like extensions) that line part of the upper respiratory system.

What does Bordetella pertussis bacteria look like?

Bordetella pertussis is a small (approximately 0.8 μm by 0.4 μm), rod-shaped, coccoid, or ovoid Gram-negative bacterium that is encapsulated and does not produce spores. It is a strict aerobe. It is arranged singly or in small groups and is not easily distinguished from Haemophilus species.

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What are the symptoms of Bordetella pertussis?

In general, whooping cough starts off like a common cold. Symptoms can include runny nose, low-grade fever, tiredness, and a mild or occasional cough. Over time, coughing spells become more severe. Coughing may last for several weeks, sometimes 10 weeks or longer.

What does the pertussis toxin do?

Pertussis toxin (PT) is a protein-based AB5-type exotoxin produced by the bacterium Bordetella pertussis, which causes whooping cough. PT is involved in the colonization of the respiratory tract and the establishment of infection.

What does Bordetella pertussis cause?

A bacterium known as Bordetella pertussis causes whooping cough infection. The bacteria attach to the lining of the airways in the upper respiratory system and release toxins that lead to inflammation and swelling.

How does Bordetella pertussis attack the body?

The bacterium Bordetella pertussis infects the respiratory tract and prevents natural defense systems from removing germs. This causes mucus accumulation, which leads to continual coughing and sometimes vomiting. The bacterium also populates the breathing tubes in the lung, inflaming and narrowing them.

How common is Bordetella pertussis?

The bacterium Bordetella pertussis causes pertussis, an acute infectious disease. However, since the 1980s there has been an increase in the number of reported cases of pertussis. In 2012, the last peak year, CDC reported 48,277 cases of pertussis.

Is Bordetella pertussis dangerous?

Whooping cough is a very serious respiratory (in the lungs and breathing tubes) infection. It is caused by Bordetella pertussis bacteria. It can cause violent coughing fits. Whooping cough is most harmful for young babies and can be deadly.

What is the blood test for pertussis?

For antibody testing, a blood sample is obtained by inserting a needle into a vein in the arm. Pertussis tests are used to detect and diagnose a Bordetella pertussis infection, commonly known as whooping cough, a highly contagious infection of the respiratory tract.

Does whooping cough damage your lungs?

Childhood (and sometimes adult) lung infections such as tuberculosis, measles, whooping cough and pneumonia can leave behind areas of damaged lung with bronchiectasis. These are rare inherited genetic diseases in which the bronchi are unable to clear bacteria and the chronic infection results in bronchiectasis.

Will pertussis go away on its own?


Pertussis can be treated with antibiotics, but treatment may not cure the symptoms. When antibiotics are started later in the illness, the damage from pertussis is already done and the cough will last until the lungs heal. Pertussis bacteria die off naturally after three weeks of coughing.

What is the difference between whooping cough and pertussis?

Pertussis (Whooping Cough) Pertussis, also known as whooping cough, is a highly contagious respiratory disease. Pertussis is known for uncontrollable, violent coughing which often makes it hard to breathe. After cough fits, someone with pertussis often needs to take deep breaths, which result in awhooping” sound.

Does whooping cough cause long term damage?

Study: Whooping cough can cause lasting damage to health. Children who survive a severe case of pertussis can suffer from long-term health and developmental problems, researchers reported in September.

Who is most at risk of pertussis?

Unprotected young infants are at highest risk of severe pertussis, but older children, adolescents and adults may also contract the disease (often in mild and atypical form) if they are not fully immunized. Exposure to pertussis is more frequent in developing countries.

What are the 3 stages of pertussis?

There are three recognized stages of the disease: catarrhal, paroxysmal, and convalescent. The incubation period for Pertussis is 7 to 10 days. During the first or catarrhal stage of the disease, the symptoms are mild and may go unnoticed or be confused with the common cold or influenza.

Can you have whooping cough more than once?


Can you get pertussis more than once? Reinfection appears to be uncommon but does occur. With natural infection, immunity to pertussis will likely wane as soon as seven years following disease; reinfec- tion may present as a persistent cough, rather than typical pertussis.

What is the best treatment for whooping cough?

It's a bacterial infection, so it can be treated with antibiotics, usually erythromycin or a family of antibiotics like erythromycin. Erythromycin is taken for 2 weeks. If antibiotics are recommended, they should take all the doses and finish the recommended course.

Do you cough up phlegm with whooping cough?

The paroxysmal symptoms of whooping cough may include: intense bouts of coughing, which bring up thick phlegm. a 'whoop' sound with each sharp intake of breath after coughing.