Many Americans who refused to get vaccinated had cited false stories they read on Facebook, including theories that the shots could lead to infertility, stillborn babies and autism
A coronavirus vaccination site in Upper Marlboro, Md., March 25, 2021. That month, Mark Zuckerberg, Facebook’s chief executive, called Ron Klain, the White House chief of staff, to discuss health misinformation. Image: Erin Schaff/The New York Times
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