Thimerosal in vaccines (which it mostly isn't): https://www.cdc.gov/vaccinesafety/concerns/thimerosal/index.html https://www.cdc.gov/vaccinesafety/concerns/thim

Thimerosal in vaccines (which it mostly isn't): https://www.cdc.gov/vaccinesafety/concerns/thimerosal/index.html https://www.cdc.gov/vaccinesafety/concerns/thimerosal/index.... https://www.nvic.org/faqs/mercury-thimerosal.aspx https://www.nvic.org/faqs/mercury-thimerosal.aspx Herd immunity: https://thoughtscapism.com/2015/04/20/the-simple-math-of-herd-immunity/ https://thoughtscapism.com/2015/04/20/the-simple-math-of-her... Effectiveness of vaccines: https://medium.com/@visualvaccines/graphic-proof-that-vaccines-work-with-sources-61c199429c8c?hc_location=ufi https://medium.com/@visualvaccines/graphic-proof-that-vaccin... It's no accident that measles outbreaks have started to recur in the US, with a very strong correlation to rates of vaccine refusal. California is a good example; multiple outbreaks there have been directly linked to the prevalence of parents abusing the "personal belief" exemption to refuse vaccinations. The OP here is another example of this exceptionally close relationship. Correlation doesn't equal causation, of course, but the "experiment" has been done over and over many times in many different populations and the results are always the same: failure to vaccinate allows previously eliminated diseases to come back.