The MMR vaccine is part of the routine vaccination program in Ontario. You need two doses to be fully protected. If you were born between 1970 and 1991, you probably only received one dose of the vaccine and may not be fully protected from mumps.
The most common side effect of the MMR vaccine is mild redness, swelling and pain at the injection site. The MMR vaccine may cause a rash and/or fever beginning five to 12 days after vaccination, which can last for a few days. Allergic reactions and other serious reactions to the MMR vaccine are rare.
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