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¿Las vacunas funcionan para las nuevas variantes?

El ruido constante de las noticias sobre nuevas variantes del coronavirus[1] —primero en el Reino Unido[2], luego en Sudáfrica, Brasil[3] y Estados Unidos[4]— ha provocado una nueva preocupación: ¿las vacunas protegerán de estas versiones alteradas del virus? Hasta ahora la respuesta ha sido sí, según comentaron varios expertos en entrevistas. Pero dos pequeños estudios nuevos, …

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U.S. Coronavirus Cases Are Falling, but Variants Could Erase Progress

CHICAGO — In recent days, coronavirus cases have been dropping steadily[1] across the United States, with hospitalizations falling[2] in concert. But health officials are growing increasingly concerned that quickly circulating variants of the virus could cause new surges of cases faster than the country is managing to distribute Covid-19 vaccines. Public health experts likened the …

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Banished by Trump but Brought Back by Biden, Fauci Aims to ‘Let the Science Speak’

On Thursday morning, just hours after Mr. Biden’s inauguration, Dr. Fauci spoke to the executive board of the World Health Organization, telling the body that the United States would not be following through with Mr. Trump’s demand to leave the group in the middle of a pandemic. “The United States stands ready to work in …

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