Expanded programme on immunization. Measles outbreak at a secondary school, Ontario.
D000293:Adolescent; D000328:Adult; D004196:Disease Outbreaks / Q000517:prevention & control; D005260:Female; D006801:Humans; D017589:Immunization Programs / Q000191:economics / Q000379:methods; D008297:Male; D008457:Measles / Q000453:epidemiology* / Q000517:prevention & control; D009864:Ontario / Q000453:epidemiology; D014195:Travel