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Infectious Diseases

Onset of flu symptoms



How long (generally) does it take from exposure to the flu to the development of symtoms? If I have been around someone with the flu and am not sick in x days, can I breathe a sigh of relef and say that I won`t get it (this time)?


For the flu, it is usually from 2 to 7 days for the symptoms to appear, though there is always some variability.

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Response by:

Gary   Roselle, MD Gary Roselle, MD
Professor of Clinical Medicine
College of Medicine
University of Cincinnati