How Much Do You Know About Smallpox?
Smallpox was once found throughout the world, causing illness and death wherever it
occurred. Smallpox was primarily a disease of children and young adults, with family
members often infecting each other. A massive program by the World Health Organization
eliminated all known smallpox viruses from the world in 1977. Although the disease
no longer exists, samples of the virus that caused smallpox were saved by various
governments for research purposes.