Plenty of people – about 1 in 3, according to some studies — feel bad for a day or two after they get a flu shot. The most common symptoms include headaches, muscle aches, fatigue and fever, all of ...

New research shows that people's decision on whether or not to take the flu shot is not always based on facts.

Flu cases are rising across the United States, and hospitals continue to admit large numbers of patients. Vaccines remain one ...

The seasonal flu shot is a yearly vaccine administered to protect against the flu, or influenza. Here are the facts and side ...