Smallpox and its post-eradication surveillance.
Jezek
Z
Z
Khodakevich
L N
LN
Wickett
J F
JF
D049673:History, 20th Century; D006801:Humans; D012106:Research; D012899:Smallpox / Q000266:history / Q000517:prevention & control*; D012900:Smallpox Vaccine / Q000266:history*; D014611:Vaccination; D014944:World Health Organization
D012900:Smallpox Vaccine