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A 30-year-old member asked:

How long is the average incubation period for the flu?

1 doctor answer2 doctors weighed in
Dr. Henry Selke
Internal Medicine - Infectious Disease 17 years experience
...: The incubation period for the flu is between 1-4 days. This means that people can pass along the flu to others before they even know they are sick, as well spread the flu to others for 5-7 days after becoming sick. Washing your hands often and getting the flu vaccine are ways you can protect yourself from the flu.
Last updated Dec 28, 2017
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