Archived The Polio Vaccine Cancer Cover-up (thetruthaboutcancer.com)
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Archived The Polio Vaccine Cancer Cover-up (thetruthaboutcancer.com)
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[–] Campoutman 0 points 4 points 4 points (+4|-0) ago
Prior to the 20th century, virtually all children were infected with PV while still protected by maternal antibodies. In the 1900s, following the industrial revolution of the late 18th and early 19th centuries, improved sanitation practices led to an increase in the age at which children first encountered the virus, such that at exposure children were no longer protected by maternal antibodies. Consequently, epidemics of poliomyelitis surfaced . http://insidevaccines.com/wordpress/2010/07/01/polio-and-sanitation/