How anti-vaxxers cling to centuries-old conspiracy theories https://ift.tt/fJo911 Anti-vax resistance has been around for years. In the latest "Reality Check with John Avlon: Extremist Beat," Avlon traces the anti-government, anti-science and religious overtones that have persisted through the history of anti-vax opposition with CNN's Elle Reeve and Donie O'Sullivan.
