Usage History of 'parvoviruses'

The following chart shows how frequently 'parvoviruses' appeared in printed materials over time. For example, the word 'parvoviruses' occurred 2 times in books in 1967 and 789 times in 2008. From 1967 to 2008, the word 'parvoviruses' was used a total of 24,377 times in books scanned by Google. See Reference: Google Ngram project.

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