In-depth

Prevention

Childhood vaccines

Wonder about the benefits and risks of childhood vaccines? Get answers to your questions.

Childhood vaccines

Childhood vaccines offer protection from serious and potentially fatal diseases. Use this guide to keep your child's shots on track.

Vaccines for adults

Symptoms

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Runny nose

Runny nose: What's causing your sniffles?

Jul. 09, 2011