Posts Tagged ‘bacteria’

When bacteria were called viruses!

Saturday 29 September, 2007

The word “virus” was used in the past to refer to any poison (Latin: virus = poison), such as snake venom, and was later used to describe the causative agent of any infectious disease.

Pasteur often referred to pathogenic bacteria as viruses, but by the end of the nineteenth century, things have changed and infectious agents smaller than bacteria kept the name “filterable viruses” or viruses.

Source: Brock’s Biology of Microorganisms, Eighth Edition (P. 250)

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