Smallpox: clinical and epidemiologic features.
Henderson
D A
DA
Johns Hopkins Center for Civilian Biodefense Studies, Baltimore, Maryland 21202, USA. dahzero@aol.com
D001694:Biological Warfare; D006801:Humans; D012899:Smallpox / Q000453:epidemiology / Q000503:physiopathology / Q000517:prevention & control; D012900:Smallpox Vaccine; D014611:Vaccination
D012900:Smallpox Vaccine