Reply #21: Contagious a day before symptoms and 7 or more days after becoming sick. [View All]

[Fla Dem]

How can someone with the flu infect someone else?
Infected people may be able to infect others beginning 1 day before symptoms develop and up to 7 or more days after becoming sick. That means that you may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick.


http://www.cdc.gov/swineflu/swineflu_you.htm