evidence: No increased risk of autism observed in African-American boys associated with MMR vaccine; claim based on erroneous study retracted in 2014 CDC data did not show an increased risk of autism in African-American boys associated with the MMR vaccine. This claim is based on a study that was later retracted due to its methodological flaws which produced spurious results. Overwhelming scientific evidence shows that vaccines do not cause autism. [...] Snopes fact-checked this claim in 2014, and found it to be false: "Did collected data actually prove that the MMR vaccine produces a 340% increased risk of autism in African-American boys? The answer is no, it did not."