Smallpox. Not to be ignored.
D023482:Bioterrorism; D004189:Disaster Planning; D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D012899:Smallpox / Q000517:prevention & control*; D012900:Smallpox Vaccine; D014481:United States
D012900:Smallpox Vaccine