Mass D.P.T. vaccination in an urban community.
D002675:Child, Preschool; D004165:Diphtheria / Q000517:prevention & control*; D006801:Humans; D007194:India; D007223:Infant; D013742:Tetanus / Q000517:prevention & control*; D014505:Urban Population; D014611:Vaccination; D014917:Whooping Cough / Q000517:prevention & control*