The U.S. is in a severe flu season, and antiviral medications such as Tamiflu can help if you get sick—but it's not recommended for everyone. Here's what you need to know about the medication.

Measles outbreaks in Texas and New Mexico highlight the importance of vaccination as cases rise to nearly 100, primarily affecting children.

The influenza virus can create a host of symptoms, including headache. Discover how to distinguish a flu headache from a ...