The last naturally occurring case of the disease was in Somalia in 1977. Routine vaccination for smallpox was discontinued in the U.S. in 1972. Could smallpox be used as a bioterrorist weapon?
How much of a threat is smallpox? Find out, along with basic information about smallpox disease. Translated into 11 languages.
CDC comprehensive site on smallpox, including basics on the disease and vaccine, and specific information for health professionals. Attention: Non-MDH link