An infectious disease MD explains for how long you're likely to transmit the flu to others, with her advice for preventing viral infection.

The illness is tough to avoid once someone in your house gets sick, but medical experts have some tips to reduce your risk.

Flu takes one to four days to incubate in your system after you come into contact with the virus. You have the potential to ...

Influenza, or the flu, is a contagious respiratory virus. It can be a severe illness that affects the nose, throat and sometimes lungs. Symptoms of influenza are sore throat, cough, congestion ...

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

Also known as the "stomach bug" or "stomach flu," norovirus causes acute gastroenteritis, the CDC said, inflaming the stomach ...