Target population: The CDC tends to follow the FDA approved ages of any such product. Approval, which takes years, required the developers provide proof that target populations respond to the vaccine. Every year included added expense to vaccine development. They picked 9-26, before or early into sexual exposure. Those are the only approved ages. You can get it to avoid strains you have not yet become infected.
Answered 11/27/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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