Diphtheria carriers among school children in Athens.
D000293:Adolescent; D000917:Antibody Formation; D002353:Carrier State / Q000453:epidemiology*; D002648:Child; D003353:Corynebacterium diphtheriae / Q000302:isolation & purification; D004165:Diphtheria / Q000453:epidemiology*; D005260:Female; D006115:Greece; D006801:Humans; D007114:Immunization; D008297:Male; D009666:Nose / Q000382:microbiology; D010614:Pharynx / Q000382:microbiology; D012621:Seasons; D012959:Socioeconomic Factors