Malicious bots and trolls spread vaccine misinformation – now social media companies are fighting back

in spreading vaccine misinformation. Researchers looked at over 1.7 million vaccine-related tweets between July 2014 and September 2017. Accounts associated with these two categories tweeted at a higher rate about vaccines than average users. While there are no published studies about other social media, researchers haveIn the case of Twitter, there seem to be at least two separate goals behind spreading misleading news about vaccines.

But content originating in Russia conveys both pro- and anti-vaccine messages. This is part of a broader strategy aimed atSome Russian tweets identified in the study used the Twitter #vaccinateUS hashtag. Of all the #vaccinateUS tweets that had Russian sources,

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