Those infected with the flu are most contagious during the first three days, the CDC said. In some cases, however, people can ...

Flu cases are rising across the U.S. Here's what you need to know about symptoms, flu duration and the new strain ...

Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is surging again. Here's what to expect and ...

When the flu strikes, one of the biggest concerns is how long you might be contagious. Knowing this can help protect your family, friends, and coworkers from catching the virus. This guide from ...

The highly contagious norovirus is spreading quickly across the country as the year comes to a close thanks to a surging variant. Why it matters: The new norovirus outbreaks come as the flu, whooping ...