title: Trend of diphtheria in Calcutta.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004165:Diphtheria / Q000453:epidemiology* / Q000517:prevention & control; D004168:Diphtheria Toxoid; D005260:Female; D006801:Humans; D007194:India; D007223:Infant; D007231:Infant, Newborn; D008297:Male
chemical_list: D004168:Diphtheria Toxoid