Schiff wrote similar letters not only to Amazon CEO Jeff Bezos, but also to the head of
The letter contains a link to the recenta CNN study that showed that the vast majority of search results for the word "vaccines" on Amazon contain references to literature or films that criticize vaccination. CNN also claims that Amazon accepts paid advertising to promote anti-vaccination books and films.
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According to Schiff, scrolling through the results, you candetect a combination of antiscientific misinformation with films that, at a minimum, raise concerns from the point of view of evidence. As an example, he cites the film Vaxxed. His director is Andrew Wakefield - one of the first public figures who tied vaccines and autism. However, after the news of the Schiff letter spread to the media, links to Vaxxed disappeared from Amazon.