Pertussis (Bordetella pertussis)

PertussisPertussis is a highly infectious disease that is caused by the bacteria Bordetella pertussis. It is more commonly known as “whooping cough.” This common name is derived from the most noticeable symptom of this infection, which includes severe spells of cough followed by a “whoop” sound before the next breath. It is the second most reported vaccine-preventable disease in Canada. Although it can affect individuals of any age, the severity is greatest among young infants.

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Symptoms generally appear between 7 to 10 days after being exposed to the germ and may be delayed for up to 20 days. Pertussis infection can cause symptoms similar to those of the common cold. These include a runny nose, red watery eyes, mild fever and cough. The cough may worsen until the infected individual experiences severe coughing spells followed by a "whoop" sound before the next breath. This cough can last 6 to 12 weeks. The whooping is more common in young children than in adolescents and adults.


Pertussis is a highly infectious disease that is caused by the bacteria Bordetella pertussis, which is commonly spread through respiratory droplets in the air formed when coughing or sneezing. Infected individuals who remain untreated and living in the same household are the most common sources of infection of infants.

Pertussis is most contagious during the initial stages of illness. During this time, symptoms resemble those of the common cold. This period usually lasts up to two weeks. The contagiousness of pertussis declines quickly afterwards, but it may last up to three weeks.


An individual infected with pertussis may be prescribed antibiotics. An infected person should stay home and avoid close contact with others until treatment is completed.


The best way to protect yourself and your loved ones against pertussis is through immunization. Manitoba has a provincial immunization program, which provides free, publicly-funded vaccines to those who are eligible.

Individuals who are already infected should receive treatment and avoid close contact with young children to prevent spreading their infection. Other precautions include practicing good hand hygiene and covering your nose and mouth when you cough or sneeze.

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