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A 5-dose vial of the Pfizer Covid-19 vaccine is displayed at a mobile clinic hosted by McDonald's and the California Department of the Public Health on September 21, 2021 in Los Angeles, California. - California leads the nation with the lowest rate of Covid-19 transmission as unvaccinated people continue to be more likely infected and hospitalized than those vaccinated. (Photo by Frederic J. BROWN / AFP)
A 5-dose vial of the Pfizer Covid-19 vaccine is displayed at a mobile clinic hosted by McDonald's and the California Department of the Public Health on September 21, 2021 in Los Angeles, California. - California leads the nation with the lowest rate of Covid-19 transmission as unvaccinated people continue to be more likely infected and hospitalized than those vaccinated. (Photo by Frederic J. BROWN / AFP)
/ FREDERIC J. BROWN
Por Agencia AFP

Pfizer y BioNTech comenzaron el reclutamiento para los ensayos clínicos sobre la seguridad y la respuesta inmune de su vacuna contra el COVID-19 específica para la variante ómicron en adultos de hasta 55 años, anunció un comunicado el martes.

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