[Problem of occult immunization in poliomyelitis in childhood; serologic examinations of Hamburg children].
D002648:Child; D006801:Humans; D007109:Immunity; D007114:Immunization; D011051:Poliomyelitis / Q000276:immunology*; D014611:Vaccination
IMMUNITY; POLIOMYELITIS/immunology
Zur Frage der stummen Feiung gegen Poliomyelitis im Kindesalter; serologische Untersuchungen bei Hamburger Kindern.