[Smallpox vaccination of older children not previously vaccinated].
D035843:Biomedical Research; D002648:Child; D006801:Humans; D012899:Smallpox / Q000517:prevention & control*; D014611:Vaccination; D012901:Variola virus
SMALLPOX/prevention and control
Die Pochenschutzimpfung überalterter Erstimpflinge.