title: Epidemiology of diphtheria.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004165:Diphtheria / Q000453:epidemiology* / Q000517:prevention & control; D005260:Female; D006801:Humans; D007114:Immunization; D007194:India; D007223:Infant; D008297:Male; D012737:Sex Factors