Per CDC: Key points Smallpox was an infectious disease caused by the variola virus. Smallpox has been eradicated, with no cases occurring...

Per CDC: Key points Brucellosis is a disease caused by bacteria. The disease spreads to people through contact with infected animals or...

Per CDC: Key points HIV is a virus that attacks the body's immune system. The only way to know if you have HIV is to get tested. There...

Per CDC: At a glance Cigarette smoking is a major public health concern, with over 16 million Americans living with a smoking-related...

Per CDC: Electronic cigarettes (e-cigarettes) are sometimes called e-cigs, vapes, vape pens, and electronic nicotine delivery systems...

Per CDC: What to know Classic CJD is a quick-moving, always fatal disease that occurs worldwide. It affects the brain and causes dementia...