хм,
мы ребенку - точно делали
вот сейчас проверил - в Онтарио точно обязательно

Measles, mumps and rubella (MMR) vaccine - given at 12 months

The MMR vaccine is a three-in-one needle that protects against measles, mumps and rubella (German measles). It should be given to children soon after their first birthday and a second dose at 4-6 years of age with the measles, mumps, rubella and varicella (MMRV) vaccine.

http://www.health.gov.on.ca/en/public/programs/immunization/static/immunization_tool.html