Usage History of 'vaccination'

The following chart shows how frequently 'vaccination' appeared in printed materials over time. For example, the word 'vaccination' occurred 2 times in books in 1607 and 117,802 times in 2008. From 1607 to 2008, the word 'vaccination' was used a total of 2,830,974 times in books scanned by Google. See Reference: Google Ngram project.

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