A Schick test survey among school children in Visakhapatnam.
D000293:Adolescent; D002648:Child; D004165:Diphtheria / Q000276:immunology*; D004166:Diphtheria Antitoxin / Q000032:analysis*; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D008722:Methods
D004166:Diphtheria Antitoxin