Flu is contagious a day before symptoms show and can last up to a week. Dr. Linda Yancey, an infectious disease specialist, ...

It’s shaping up to be one of the worst flu seasons in recent history, according to the U.S. Centers for Disease Control, which tracks the flu virus nationally. (This interactive map provides a visual ...

When working out the best time to get your vaccine, you may be balancing a theoretical benefit by waiting against the chance of actually getting the flu before you get vaccinated.

A group of volunteers spent days locked in a small hotel room with people actively infected with flu. They played games, shared objects and exercised together in conditions designed to help the virus ...