La variante BA.2 de ómicron ya no es sigilosa: esto hay que saber
By BY CARL ZIMMER from NYT en Español https://ift.tt/np0mEhf
en Español Coronavirus Omicron Variant, Coronavirus Risks and Safety Concerns, Research, your-feed-science
By BY NEAL E. BOUDETTE from NYT Business https://ift.tt/31Bqrp4
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