Smallpox and smallpox vaccination.
James D
JD
Fett
D023482:Bioterrorism / Q000517:prevention & control*; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine
D012900:Smallpox Vaccine