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  • Writer's pictureModerator
    • Sep 9, 2021
    • 1 min read

CDC has been changing the DEFINITION of VACCINES over time

Updated: Sep 14, 2021

This was in 2015 ...


This was in 2018 ...



Now in 2021 ...


Source : https://www.cdc.gov/vaccines/vac-gen/imz-basics.htm


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