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Facebook policy blocked vaccine misinformation

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A 2019 Facebook policy to stop the spread of misinformation about vaccines actually worked, according to a new study. In addition, the researchers called for rigorous evaluation to ensure social media policies are effective.

The study, “The impact of Facebook’s vaccine misinformation policy on user endorsements of vaccine content: An interrupted time series analysis,” was published in Vaccine and announced by George Washington University (GWU) in a news release.

Researchers there found the Facebook policy about vaccines did reduce people’s interactions with vaccine misinformation.

Following years of growing vaccine opposition and several outbreaks of measles — a vaccine-preventable disease — Facebook established in 2019 its first policy to stop the spread of misinformation about vaccines, according to the study.

The GWU researchers wondered if the new policies were effective at stopping the spread of misinformation.

The researchers identified 172…

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