At what age does the Canadian schedule give the first dose of the measles, mumps and rubella vaccine?
Answer and explanation
Correct answer: C. At 12 months
- Step 1: The first dose is given at 12 months and the second between 18 months and 6 years, depending on the province.
Answer
At 12 months.
Why not the others: Maternal antibodies interfere with the vaccine before 12 months.
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