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(FILES) In this file photograph taken on March 25, 2021, bottles of the single-dose Johnson & Johnson Janssen Covid-19 vaccine await transfer into syringes for administering at a vaccine rollout targetting immingrants and the undocumented in Los Angeles. - Europe's medicines regulator said April 20, 2021, that blood clots should be listed as a 'very rare' side effect of Johnson & Johnson's coronavirus vaccine, but that the benefits of the shot still outweigh the risks. The United States is also expected to announce its decision on the single-shot J&J vaccine by April 23, as nations around the world urgently try to accelerate inoculation campaigns and revive their pandemic-ravaged economies. (Photo by Frederic J. BROWN / AFP)

Aprobación

EEUU: una sola dosis de la vacuna J&J previene el covid-19

Científicos de la Administración de Alimentos y Medicamentos (FDA por sus siglas en inglés) confirmaron que la vacuna muestra un 66% de eficacia para prevenir el covid-19 de moderado a grave y el 85%...

24/02/2021
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