Smallpox and smallpox vaccination.
Donald K
DK
Milton
D000388:Air; D018562:Disease Transmission, Infectious / Q000517:prevention & control; D006801:Humans; D012899:Smallpox / Q000517:prevention & control / Q000635:transmission*; D012900:Smallpox Vaccine; D012901:Variola virus / Q000254:growth & development* / Q000472:pathogenicity
D012900:Smallpox Vaccine