title: Some aspects of diphtheria immunity in rural West Bengal.
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004165:Diphtheria / Q000276:immunology* / Q000517:prevention & control; D005260:Female; D006801:Humans; D007109:Immunity; D007114:Immunization; D007194:India; D007223:Infant; D008297:Male; D012067:Religion; D012424:Rural Population; D012621:Seasons; D012959:Socioeconomic Factors