The Concept of the Virus was Proposed by Louis Pasteur. He Spent His Entire Life in a Scientific Debate in which he vehemently argued that Viruses were Real and the Cause of Disease. Others Argued that Viruses were part of the Body's Natural Defense Against a Toxic Environment (i.e. Cholera and other Historic Plagues were Ultimately Caused by Poor Sanitation and Lack of Personal Cleanliness).
Even though Pasteur Recanted and Admitted on his Death Bed that he was Completely Mistaken, later "Scientists" Employed by Big Pharma Companies Conveniently IGNORED this HISTORICAl FACT a Continued to Promote the Idea that Viruses are the Cause of Disease--not a Natural Part of the Human Immune System that work to keep the body in balance.