Mezclar dosis de vacunas de Pfizer y AstraZeneca mejora respuesta inmune contra COVID-19: estudio

Un calendario mixto de vacunación bajo el que se administra una dosis de la inyección COVID-19 de Pfizer cuatro semanas después de una vacuna de AstraZeneca, producirá una mejor respuesta inmune que dar otra dosis de AstraZeneca, mostró este lunes 28 de junio un estudio de Oxford.   El estudio, llamado Com-COV, comparó programas mixtos de dos dosis de las vacunas Pfizer y AstraZeneca, en lo que encontró que […]

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Pfizer Says COVID Vaccine Highly Effective Against Delta Variant

JERUSALEM (Reuters) – The Pfizer-BioNTech vaccine is highly effective against the Delta variant of COVID-19, a Pfizer official in Israel said on Thursday. First identified in India, Delta is becoming the globally dominant version of the coronavirus, according to the World Health Organization. “The data we have today, accumulating from […]

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COVID-19 vaccines in use

Pfizer, Moderna vaccines effective against Indian variants: study. The lab-based study was carried out by the NYU Grossman School of Medicine and NYU Langone Center and is preliminary because it has not yet been published in a peer-reviewed journal. Full story:

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Effectiveness of the BNT162b2 Covid-19 Vaccine against the B.1.1.7 and B.1.351 Variants

The messenger RNA vaccine BNT162b2 (Pfizer–BioNTech) has 95% efficacy against coronavirus disease 2019 (Covid-19).1 Qatar launched a mass immunization campaign with this vaccine on December 21, 2020. As of March 31, 2021, a total of 385,853 persons had received at least one vaccine dose and 265,410 had completed the two doses. […]

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