NIH study supports diluting smallpox vaccine stockpile.
D001694:Biological Warfare; D006801:Humans; D009316:National Institutes of Health (U.S.); D012899:Smallpox / Q000517:prevention & control; D012900:Smallpox Vaccine / Q000600:supply & distribution*; D014481:United States
D012900:Smallpox Vaccine