title: Effect of the immunization program in Ontario schools.
mesh_terms: D000293:Adolescent; D002648:Child; D004165:Diphtheria / Q000517:prevention & control; D006801:Humans; D008457:Measles / Q000517:prevention & control; D009107:Mumps / Q000517:prevention & control; D009864:Ontario; D010349:Patient Compliance; D011051:Poliomyelitis / Q000517:prevention & control; D012409:Rubella / Q000517:prevention & control; D012574:Schools; D013742:Tetanus / Q000517:prevention & control; D014611:Vaccination