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More than two years on, the best scientific evidence says that masks don’t stop Covid and public health officials continue to ignore it.

United statesSan diegoBen rechtPierre manentGavin newsomRon desantisCarnegie mellon wesley pegdenAeric mccoyJason abaluckJohn tierneyUniversity of californiaCensus bureauNational institutes of healthWorld health organizationUniversity of pittsburgh maria chikinaGovernor ron desantis