(FILES) In this file photo taken on December 15, 2021: The Moderna Covid-19 vaccine awaits administration at a vaccination clinic in Los Angeles, California. - A panel of US medical experts advising the government voted December 16, 2021 to recommend mRNA Covid vaccines made by Pfizer and Moderna over the Johnson & Johnson vaccine, in light of its weaker protection and greater risks. (Photo by Frederic J. BROWN / AFP)
(FILES) In this file photo taken on December 15, 2021: The Moderna Covid-19 vaccine awaits administration at a vaccination clinic in Los Angeles, California. - A panel of US medical experts advising the government voted December 16, 2021 to recommend mRNA Covid vaccines made by Pfizer and Moderna over the Johnson & Johnson vaccine, in light of its weaker protection and greater risks. (Photo by Frederic J. BROWN / AFP)
/ FREDERIC J. BROWN
Por Agencia EFE

La farmacéutica estadounidense Moderna ha asegurado hoy que una dosis de refuerzo de su vacuna contra el COVID-19 aumenta la protección frente a la variante ómicron.

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