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Measles and whooping cough were also virtually eradicated, that is, until the "anti-vax" movement started to spread.
Robert F. Kennedy Jr., the environmental activist, is another anti-vax crackpot.
Justin Sullivan/Getty Images WIRED published a neato piece of data analysis Monday, mapping what it called "anti-vax Twitter."
In 2014, Messenger organized a lecture tour in Australia for American physician and anti-vax activist Sherri Tenpenny called 'Healthy Lifestyles Naturally'.
The anti-vax groups were by now fervent believers, given emotional justification by the rightness of their cause, defenders against what they believed was a cruel assault on children by profit-seeking big pharma and amoral scientists.
He feels that the anti-vax parents are hiding their children in the herd of vaccinated children and that if these parents had experienced polio and smallpox like "our grandparents had", they would not be so eager to refute vaccinations now.
It speaks volumes that the work of British medical researcher Andrew Wakefield, who became the posterboy for the anti-vax movement after his "studies" illustrated a supposed link between the measles, mumps and rubella vaccine and autism, was discredited as fraudulent and he was struck off the medical register in 2010.