Even if you received the measles vaccine as a child, you may still need a booster shot to be totally immune.

DISEASE
High blood pressure guidelines have changed recently, which means Americans are more likely to receive a hypertension diagnosis than ever. Here are some essential facts about high blood pressure symptoms and causes.
Different types of hepatitis have different causes and treatments. Here's what you should know about hepatitis a, hepatitis b, hepatitis c, and other forms of the disease.
Asthma symptoms affect more than 25 million Americans, including 7 million children. But kids who grow up around animals are less likely to have an asthma diagnosis.
Greek leader Alexander the Great had a pretty miserable death. A new theory says he may have been paralyzed—yet still conscious—for six days after he was pronounced dead.
A mosquito-borne disease might be responsible for the Louisiana Purchase.
It makes some people chew ice.
Doctors don't know what causes it or how to treat it.
The 1951 mass poisoning has been blamed on everything from tainted bread to a CIA experiment with LSD.
By some estimates, malaria has killed half of everyone who has ever lived—and it almost took down one former president.
They call it the "practice" of medicine for a reason.