FILE - Vials for the Moderna and Pfizer COVID-19 vaccines are seen at a temporary clinic in Exeter, N.H. on Thursday, Feb. 25, 2021. The Food and Drug Administration has authorized another booster dose of the Pfizer or Moderna COVID-19 vaccine for people age 50 and up, Tuesday, March 29, 2022. (AP Photo/Charles Krupa, File)
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