How Long Is the Flu Contagious?

Flu Symptoms

Flu symptoms usually begin 1-4 days after exposure to the virus.

It is possible to spread the flu before the start of your symptoms -- 3-4 days in the asymptomatic incubation period

The flu is generally no longer transmittable 24 hours after the resolution of fever without antipyretic medications such as Ibuprofen or Acetaminophen