2 weeks or more: You friend be contagious from a few days up to two weeks or more, depending on which virus is causing the stomach flu (gastroenteritis). A number of viruses can cause gastroenteritis, including noroviruses and rotaviruses.
Answered 6/10/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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