Thursday, 29 July 2021

Pfizer impulsa el debate de las dosis de refuerzo contra la COVID-19 con un nuevo estudio


By BY CARL ZIMMER, APOORVA MANDAVILLI AND SHARON LAFRANIERE from NYT en Español https://ift.tt/3zHdoye

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Trump offers warm welcome as China's Xi arrives for US visit

The US treasury secretary said that the US and China had reached an agreement to extend a trade truce as Xi began his visit. from BBC News...