Herd Immunity
http://www.vaccinationcouncil.org/2012/02/18/the-deadly-impossibility-of-herd-immunity-through-vaccination-by-dr-russell-blaylock/
The term, ‘herd immunity’, was coined by researcher, A W Hedrich, after he’d studied the epidemiology of measles in USA between 1900-1931. His study published in the May, 1933 American Journal of Epidemiology concluded that when 68% of children younger than 15 yrs old had become immune to measles via infection, measles epidemics ceased. For several reasons, this natural, pre-vaccine herd immunity differed greatly from today’s vaccine ‘herd immunity’.1,2
When immunity was derived from natural infection, a much smaller proportion of the population needed to become immune to show the herd effect; compare the 68% measles immunity required for natural herd immunity to the very high percentages of vaccine uptake deemed necessary for measles vaccine ‘herd immunity’. In his ‘Vaccine Safety Manual’, Neil Z Miller cites research which concluded increasing vaccine uptake necessary for ‘herd immunity’ ranging from “70 to 80 percent of two year olds in inner cities” in 1991 to “‘close to 100 percent coverage’…with a vaccine that is 90 to 98 percent effective.” in 1997. Miller notes that, “When the measles vaccine was introduced in 1963, officials were confident that they could eradicate the disease by 1967.”
