Prevalence of polio and measles antibodies among preschool children.
D000367:Age Factors; D000906:Antibodies / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008457:Measles / Q000276:immunology*; D008923:Missouri; D011051:Poliomyelitis / Q000276:immunology*; D012572:School Health Services
D000906:Antibodies