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(FILES) In this file photo taken on August 10, 2021 a medic places two vials of COVID-19 coronavirus vaccines (L to R): Pfizer-BioNTech and Moderna, on a table before administering doses at a Clalit Health Services Medical Centre in east Jerusalem. - People who received Johnson & Johnson's Covid-19 vaccine may benefit from a booster dose of Pfizer or Moderna, preliminary results of a US study published October 13, 2021 showed. (Photo by HAZEM BADER / AFP)
(FILES) In this file photo taken on August 10, 2021 a medic places two vials of COVID-19 coronavirus vaccines (L to R): Pfizer-BioNTech and Moderna, on a table before administering doses at a Clalit Health Services Medical Centre in east Jerusalem. - People who received Johnson & Johnson's Covid-19 vaccine may benefit from a booster dose of Pfizer or Moderna, preliminary results of a US study published October 13, 2021 showed. (Photo by HAZEM BADER / AFP)
/ HAZEM BADER
Por Agencia AFP

La agencia estadounidense que regula los medicamentos aprobó el miércoles el uso de una vacuna contra el COVID-19 diferente para la dosis de refuerzo que la utilizada originalmente para la inmunización, según informó en un comunicado.

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