In Canada,mass vaccinations have lowered the rate of some infectious diseases.

Name: In Canada,mass vaccinations have lowered the rate of some infectious diseases.
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Mass vaccinations in Canada have contributed to a decrease in the occurrence of certain infectious diseases such as polio, measles, rubella, and chickenpox. This is due to the fact that vaccines help to build immunity against these diseases, making it more difficult for them to spread within the population.

In Canada,mass Vaccinations Have Lowered the Rate of Some Infectious