Seek medical attention if you have trouble breathing after a flu shot ... of the flu vaccine can include: You might experience soreness, swelling, redness, or a slight rash at the site of your ...

Three people have died from measles as the U.S. faces a growing outbreak of the highly contagious virus. Can you get measles if you're vaccinated? Experts explain.

Before the vaccine, the virus spread in a world very different from today’s.

A test called the Titer test, which measures the levels of antibodies in a blood sample, is available at some national chain pharmacies including CVS and Walgreens. Most children should receive two ...