Here's an article on the history of anti-vaccination movements with sources.

• "The Leicester Demonstration March of 1885 was one of the most notorious anti-vaccination demonstrations. There, 80,000-100,000 anti-vaccinators led an elaborate march, complete with banners, a child’s coffin, and an effigy of Jenner."

• "...surveys of medical providers in the UK in the late 1970s found they were reluctant to recommend the immunization to all patients."

• "Although the time periods have changed, the emotions and deep-rooted beliefs—whether philosophical, political, or spiritual—that underlie vaccine opposition have remained relatively consistent since Edward Jenner introduced vaccination."