What Is the Period That Bronchitis Is Contagious?


Quick Answer

According to HealthTap, acute bronchitis is typically contagious from four to seven days, though this varies depending on the cause of the bronchitis. Bronchitis caused by allergies is not contagious.

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Full Answer

As About.com points out, when bronchitis is caused by a virus, it is contagious, with approximately the same contagion level as a cold. Contagious versions of bronchitis can be caused by an adenovirus, rhinovirus, flu or Mycoplasma pneumoniae. Bronchitis occurs when the symptoms of the virus or allergy cause inflammation in the bronchial tubes of the lungs. Chronic bronchitis occurs when symptoms, especially a cough, linger for over three months. Children with bronchitis should be kept home from school if they have a fever.

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