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Nutritious and help strengthen your immune system.
Before you drive yourselves into a frenzy the word sterilization can mean killing a germ or a virus as in the clinical sense vs the bordello where your mind is usually at.
In the immortal words of Spike Lee. Do the right thing.
Vaccine History: Developments by Year
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link
https://www.chop.edu/vaccine-education-center/science-history/vaccine-history/developments-by-year