Pertussis: Pertussis or whooping cough has a predetermined course. Antibiotics kill the bacteria but the symptoms can persist for months. The usual presentation is runny nose for about 2 weeks, followed by the characteristic cough with an end whoop for many weeks/months. The recovery period takes another 1 - 2 months.
Answered 7/3/2018
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3 months: The heavy duty cough may last up to 3 months even with proper treatment.
Answered 8/12/2012
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