Completely debunked!

https://www.snopes.com/fact-check/bad-medicine/

On 24 August 2014 a CNN iReport claiming intentional suppression of data relating to 340% increased risk of autism among specific populations of African-American boys following MMR vaccinations went viral. The story seemed to disappear mysteriously, further fueling the notion that an intentional coverup was underway.

The idea that vaccines lead to autism is not a new conspiracy theory, nor is it a particularly uncommon one. A now heavily discredited study published in the medical journal Lancet in 1998 planted a seed of fear about vaccine safety; and despite efforts to counteract the widespread concern among worried parents, public health officials continue to encounter growing public resistance to vaccination. And the CNN iReport in question was based on a video which featured William Thompson, a senior researcher at the CDC, seemly “confessing” to anti-vaccinationist Brian Hooker about a coverup at the CDC and included material such as a claim by Dr. Andrew Wakefield (who in 1998 published a fraudulent research paper claiming a link between MMR vaccine and the appearance of autism and has since been barred from practicing medicine in the UK) asserting that the results of a study proving a link between autism and MMR (measles, mumps, and rubella) vaccinations had been “hidden” by the CDC: [see article]
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The CDC issued a statement regarding the data in question, with instructions for accessing the study at the center of the controversy. As the CDC noted, the authors of that study suggested that the most likely explanation for the moderate correlation between autism and vaccination in young children was the existence of immunization requirements for autistic children enrolled in special education preschool programs: [see article]
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Also: http://scienceblogs.com/insolence/2014/08/22/brian-hooker-proves-andrew-wakefield-wrong-about-vaccines-and-autism/