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A member asked:
How long does it take for a baby to show signs of pertussis?
7 doctors weighed in across 3 answers
1-2 weeks: The incubation period for pertussis about 7-10 days, with a range of 4-21days. If you know your baby was exposed, call your baby's doctor. There are medicines to help prevent disease after a known exposure.
Answered 9/7/2018
6.7k views
1/2 - 3 weeks: A baby exposed to pertussis needs to be evaluated by the doctor. The incubation period (time from exposure to onset of ill symptoms) is from few days up to 3 weeks, in the majority of cases.
Answered 6/9/2011
6.5k views
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