Smallpox is a contagious infection caused by the variola virus. Smallpox can be deadly. The best thing you can do to protect yourself from smallpox is to get vaccinated. If you have symptoms of smallpox -- such as severe illness with a high fever, then a body rash -- seek medical care. Follow the links below to find WebMD's comprehensive coverage about how smallpox is contracted, what it looks like, how to treat it, and much more.
An Overview of Smallpox
WebMD explains smallpox, a virus that has largely been eradicated worldwide.
Side Effects of the Smallpox Vaccine
Learn more about the potential side effects of the smallpox vaccine.
Biological and Chemical Weapons
WebMD provides a list and explanation of biological and chemical agents, including their danger level and how they're used.
Biological Warfare Treatment
Biological weapons include any organism (such as bacteria, viruses, or fungi) or toxin found in nature that can be used to kill or injure people. (Toxins are poisonous compounds produced ...