Evidence vaccines work

How can you be sure that vaccinations work?

The simple answer:

Through laboratory, animal and human studies, and the scientific analysis of surveillance data.

A more in depth answer can be found here.

Here are some examples for various diseases:

Measles

measles vaccine effectiveness

Pertussis

pertussis annual cases and vaccination rates

 

Polio

graph-polio_1947-19681

There are lots more examples here.

Vaccinations. They really work.

Page reviewed June 2016.
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