[Introduction of continuous protective vaccination, beginning at the age of 3 months, in a city].
D002644:Chickenpox / Q000276:immunology*; D002648:Child; D004165:Diphtheria / Q000276:immunology*; D006801:Humans; D007223:Infant; D011634:Public Health; D013742:Tetanus / Q000276:immunology*; D013745:Tetanus Toxoid; D014611:Vaccination; D014917:Whooping Cough / Q000276:immunology*
D013745:Tetanus Toxoid
CHICKENPOX/immunology; DIPHTHERIA/immunology; PUBLIC HEALTH; TETANUS/immunology; VACCINATION/in infancy and childhood; WHOOPING COUGH/immunology