Prevalence of diphtheria carriers among pre-school children.
D000367:Age Factors; D002353:Carrier State / Q000453:epidemiology*; D002675:Child, Preschool; D003353:Corynebacterium diphtheriae / Q000302:isolation & purification; D004165:Diphtheria / Q000453:epidemiology*; D006798:Housing; D006801:Humans; D007114:Immunization; D007117:Immunization, Secondary; D007194:India; D007223:Infant; D009666:Nose / Q000382:microbiology; D010614:Pharynx / Q000382:microbiology; D012924:Social Conditions