Leads from the MMWR. Smallpox vaccine.
D006801:Humans; D007757:Laboratory Infection / Q000517:prevention & control; D008887:Military Medicine; D012899:Smallpox / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000008:administration & dosage*; D014195:Travel; D014481:United States
D012900:Smallpox Vaccine