Prevalence of poliomyelitis neutralizing antibodies in Norwegian school children before vaccination.
D057134:Antibodies, Neutralizing; D002648:Child; D005006:Ethnicity; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D015995:Prevalence; D014611:Vaccination
D057134:Antibodies, Neutralizing
POLIOMYELITIS/immunology