Prognosis

Covid Boosters Produce Mostly Mild Side Effects, CDC Says

  • Data collected after initial clearance for immunocompromised
  • Most recipients of booster stuck with maker of initial shot
Photographer: Dwayne Senior/Bloomberg
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People who got Covid-19 vaccine boosters after the shots were cleared for those with weakened immune systems had mostly mild to moderate reactions, according to the U.S. Centers for Disease Control and Prevention.

Some 22,191 booster recipients registered with a federal monitoring system starting Aug. 12, when the doses were first authorized on an emergency basis by U.S. regulators, through Sept. 19, the CDC said in a report on Tuesday.