[First vaccination of older children].
D035843:Biomedical Research; D002648:Child; D006801:Humans; D012899:Smallpox / Q000517:prevention & control*; D014611:Vaccination; D014612:Vaccines; D012901:Variola virus
D014612:Vaccines
SMALLPOX/prevention and control; VACCINES AND VACCINATION
Zur Pockenerstimpfung älterer Kinder.