Pfizer presented data to investors showing that a third dose of its COVID-19 vaccine boosts immunity. The company believes everyone will need a boost eight to 12 months after receiving a second shot.
Pfizer Says A 3rd Dose Of Its COVID-19 Vaccine Boosts Immunity
By Joe Palca
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NPR's Audie Cornish speaks with Jacqueline Charles of the Miami Herald and John Holman of Al Jazeera English about the Haitian migrants at the U.S.-Mexico border and those being returned to Haiti.