Vials with Pfizer-BioNTech and Moderna coronavirus disease (COVID-19) vaccine labels are seen in this illustration picture taken March 19, 2021. | Dado Ruvic | Reuters
Science

Vacuna anticovid de Moderna supera a Pfizer, según una nueva investigación en Estados Unidos

President Joe Biden speaks during a meeting with business leaders and CEOs on the COVID-19 response in the library of the Eisenhower Executive Office Building on the White House campus in Washington, Wednesday, Sept. 15, 2021. | Andrew Harnik, AP
Politics

Presidente Biden y empresarios se reunieron para hablar sobre la obligatoriedad de la vacuna

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