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- What is whooping cough (pertussis)?
- Is whooping cough contagious?
- How will I know if someone has whooping cough? What are the various stages of pertussis?
- How is whooping cough transmitted? What is the incubation period for pertussis? What is the contagious period for pertussis?
- When will I know someone is cured of whooping cough?
- When should I contact a medical caregiver about whooping cough?
- Can whooping cough be prevented?
What is whooping cough (pertussis)?
Whooping cough (also termed pertussis) is a respiratory disease that is caused by the bacterium Bordetella pertussis. It results in characteristic fits of coughing (the characteristic noise on inhalation produces a whooping sound) and mild to moderate difficulty with breathing (most noticeable during coughing fits). These symptoms are caused by the release of toxins produced by Bordetella pertussis bacteria that damage the lining of throat cells and cause inflammation and swelling of the throat.
Is whooping cough contagious?
Whooping cough is considered highly contagious and is only found in humans. Coughing or sneezing spreads whooping cough from person to person. The bacteria can live in droplets that become airborne during coughing or sneezing; anyone in close contact with an individual who has whooping cough is likely to be exposed to the disease. Even individuals who have had pertussis vaccine in the past can become infected because the vaccine, and even having the disease, does not confer lifelong protection against whooping cough. Likewise, even individuals who previously had whooping cough are not immune to future episodes of infection. Consequently, pertussis vaccine booster shots are highly recommended and are usually incorporated with other vaccines like diphtheria and tetanus, which have a similar limited time (about five to 10 years) of protection.
How will I know if someone has whooping cough? What are the various stages of pertussis?
Early in the disease patients may have cold-like symptoms (mild cough and/or fever), but after about a week or so, severe coughing can begin. The cold-like symptoms comprise stage one of whooping cough and last about one to two weeks; stage one is termed the catarrhal stage. Stage two, termed the paroxysmal stage, can last from about one to six weeks and consists of fits of rapid coughing (coughing fits) and the characteristic whooping sounds. Stage three, termed the convalescent stage, lasts about two to three weeks with gradual reduction of the coughing fits. The length of time coughing fits last is variable; for example, some individuals will still experience some coughing for as long as about three and a half months. The coughing fits can cause intermittent shortness of breath, vomiting, and fatigue. Unfortunately, usually a person is not diagnosed with whooping cough until stage two, but the person can be contagious during stage one. Individuals with whooping cough are highly contagious during the first two weeks of stage two, but they still can be contagious for about three weeks. Some experts suggest antibiotic therapy reduces contagiousness in individuals with the disease.
Not every person who gets pertussis develops the characteristic coughing fits; if a person, especially an infant or young child, develops a persistent relatively severe cough for a week or more, a physician should be consulted to perform blood tests and cultures for Bordetella pertussis bacteria.
How is whooping cough transmitted? What is the incubation period for pertussis? What is the contagious period for pertussis?
Coughing, sneezing, or direct personal contact with an infected individual easily spreads whooping cough from person to person. It is not spread to pets (dogs and cats, for example), but it can be spread to other adults and even to vaccinated individuals whose vaccine immunity has waned. It can be spread before the characteristic coughing fits begin. The incubation period is variable, and symptoms develop usually five to 10 days after exposure to the bacteria; occasionally, the incubation period can be up to three weeks. It is possible to be contagious during the incubation period, but the highly contagious time for spread to others is in the beginning weeks of stage two (coughing fits, whooping sounds produced).
When will I know someone is cured of whooping cough?
After about three weeks of symptoms, the body usually develops an immune response that effectively limits and/or kills the bacteria. However, symptoms can still be present for some period of time (weeks to months) because of the damage done by the infection. Early treatment with antibiotics is thought to reduce the time of contagiousness and importantly, may reduce the severity of symptoms. However, antibiotics may not help reduce any symptoms if started later (a few weeks) in the disease process. The U.S. Centers for Disease Control and Prevention (CDC) states that giving cough medicine for pertussis usually will not help and is not recommended for children under 4 years of age; parents and/or caregivers should check with their child's pediatrician if they aren't sure what to do.
When should I contact a medical caregiver about whooping cough?
Call your child's physician or your physician or consider going to an emergency department if coughing spells cause the following:
Can whooping cough be prevented?
Perhaps the best way to avoid pertussis is to contact your child's pediatrician to make sure that your child is up to date with their childhood vaccinations since these include vaccinations for pertussis. For adults, the same thing is true; they should get routine booster shots for pertussis, diphtheria, and tetanus every 10 years or when their physician recommends it.
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United States. Centers for Disease Control and Prevention. "Pertussis (Whooping Cough)." Dec. 1, 2014. <http://www.cdc.gov/pertussis/>.
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PertussisWhooping cough (pertussis) is highly contagious respiratory infection that is caused by the bacteria Bordetella pertussis. There are an estimated 300,000 plus deaths annually from whooping cough (pertussis). Whooping cough commonly affects infants and young children but can be prevented with immunization with the vaccine. First stage whooping cough symptoms are a runny nose, sneezing, low-grade fever, a mild cough with the cough gradually becoming more severe. After one to two weeks, the second stage of whooping cough begins.
Whooping CoughWhooping cough (bordetella pertussis) is a highly contagious bacterial infection. Read how vaccines and antibiotics could prevent whooping cough. Learn about the symptoms, causes, and treatment of whooping cough.
Vaccination FAQsVaccinations increase our ability to fight diseases that may be contagious or even fatal. Immunity occurs by getting the disease or through the use of a vaccine. There are two types of vaccine: inactivated vaccines and vaccines made from live, weakened viruses.