Progress in science is shackled by its observational and measurement technologies. Germs were theorized as a source of human illness for over a thousand years along with other now disproven theories. It took the development of the microscope to verify the existence of harmful bacteria and debunk alternative theories. Identifying another harmful microbial, the virus, awaited the development of the electron microscope.
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Published online: October 23, 2019
© 2019 by the American Congress of Rehabilitation Medicine