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Learn what the human immune system is and how it works to protect your body from disease.

If you quit smoking now, you get on a path to a healthier you. Check out this BeTobaccoFree.gov infographic about how quitting benefits your health.

Everything you need to know about the flu illness, including symptoms, treatment and prevention - CDC

Guide to web sites of federal agencies involved in the vaccine system.

Information on low-cost and free vaccinations. Find resources to make vaccines more affordable for you and your family.

Rabies is a preventable viral disease of mammals most often transmitted through the bite of a rabid animal. The vast majority of rabies cases reported to the Centers for Disease Control and Prevention (CDC) each year occur in wild animals like raccoons, skunks, bats, and foxes.

Certain cuts may become infected with bacteria, including the ones that cause tetanus. Tetanus vaccine can help prevent tetanus disease, commonly known as

Learn how tobacco laws and smoking policies prevent people from using tobacco products. Go to BeTobaccoFree.gov for more information.

Get the facts and statistics about smoking and tobacco use on BeTobaccoFree.gov.

Smoking is bad for your health and can cause negative health effects, such as cancer and disease. Learn more at BeTobaccoFree.gov.