Who invented vaccines?


Who knows who invented vaccines write your answer in the comment section below. If you also know when were vaccines invented be free to write it too. If you want to read my already written articles about inventions and don’t want to guess new ones then you need to look in a different category then “Guess who and when” on my website. Let’s get smarter!

who invented vaccines

who invented vaccines


when were vaccines invented

when were vaccines invented

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