A member asked:

Exposed to someone with the flu 4 days ago. how long is incubation period? are we in the clear?

A doctor has provided 1 answer

A few days: The typical incubation period for influenza is 1-4 days (average: 2 days). Adults can be infectious from 1 day before onset of symptoms to 5-7 days after illness onset. Influenza is more infectious in children than adults.

Answered 12/28/2016

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