Serological study for Campylobacter in children in Madrid.
D000293:Adolescent; D000907:Antibodies, Bacterial / Q000032:analysis; D002169:Campylobacter Infections / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D003168:Complement Fixation Tests; D006801:Humans; D013030:Spain
D000907:Antibodies, Bacterial