Cómo funciona la vacuna contra la COVID-19 de Pfizer-BioNTech
La empresa alemana BioNTech se asoció con Pfizer para desarrollar y probar una vacuna contra la COVID-19 conocida como BNT162b2,...
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U.S. Vaccine Supply: What to Know
Demand for vaccines is skyrocketing as the United States grapples with a record death toll from Covid-19 and the threat...
What to Know About the World’s Top Covid-19 Vaccines
What to Know About the World’s Top Covid-19 Vaccines The Health and Science DeskTracking the coronavirus Oxford-AstraZeneca Efficacy: 62-90%, depending...
Pfizer Says Its Vaccine Works Against Key Mutation in Contagious Variants
Pfizer and BioNTech announced on Friday that their Covid vaccine is effective against one of the mutations present in the...