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Do vaccines cause autism?

No. 657,461 Danish children, and a meta-analysis of more than 1.2 million more, found no link.

R

Receipt

0.81.01.21.4MMR vs none0.93 (0.85 to 1.02)Autism hazard ratio (95% CI)

Redrawn from published values.

Hviid A, Hansen JV, Frisch M, Melbye M. Measles, Mumps, Rubella Vaccination and Autism: A Nationwide Cohort Study. Ann Intern Med. 2019;170(8):513-520. doi:10.7326/M18-2101