Anti-vaccinationism in chiropractic
Anti-vaccinationism in chiropractic is widespread, but there are notable differences within the trade. Chiropractic is a form of alternative medicine founded on the idea that all disease is caused by disruption of the flow of "innate" (or innate intelligence) in the spine, by so-called vertebral subluxations – a pseudoscientific concept.
Source: Wikipedia — Anti-vaccinationism in chiropractic (CC BY-SA 4.0)