"Anti-vaccinators" have in the past objected to whooping cough and measles vaccinations and opted out, resulting in outbreaks of these nearly extinct diseases.

Yeah, I used to think that. Now I'm not sure, because the same people who were saying that stuff also say that the mRNA jabs are safe and effective and have no side effects and COVID was the deadliest pandemic ever and if you question any of it you're a filthy anti-science anti-vaxxer.