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SARS-CoV-2

Vaccine Breakthrough Cases Rising With Delta: Here’s What That Means

Editor’s note: Find the latest COVID-19 news and guidance in Medscape’s Coronavirus Resource Center. At a recent town hall meeting in Cincinnati, Ohio, President Joe Biden was asked about COVID-19 cases, hospitalizations, and deaths rising in response to the Delta variant. Touting the importance of vaccination, “We have a pandemic for […]

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Estudio de mezcla de vacunas sugiere que las combinaciones son seguras y efectivas

Una investigación descubre que la tercera inyección de AstraZeneca puede ser un refuerzo efectivo, ya que los investigadores se enfocan en los desarrollos de próxima generación. Alternar una dosis de la vacuna Covid-19 fabricada por Pfizer con una de AstraZeneca es seguro y proporciona una fuerte respuesta inmune contra la enfermedad, muestra un nuevo estudio. […]

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Spatiotemporal invasion dynamics of SARS-CoV-2 lineage B.1.1.7 emergence

Abstract Understanding the causes and consequences of the emergence of SARS-CoV-2 variants of concern is crucial to pandemic control yet difficult to achieve, as they arise in the context of variable human behavior and immunity. We investigate the spatial invasion dynamics of lineage B.1.1.7 by jointly analyzing UK human mobility, […]

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Immune responses against SARS-CoV-2 variants after heterologous and homologous ChAdOx1 nCoV-19/BNT162b2 vaccination

Abstract Currently approved viral vector-based and mRNA-based vaccine approaches against coronavirus disease 2019 (COVID-19) consider only homologous prime-boost vaccination. After reports of thromboembolic events, several European governments recommended using AstraZeneca’s ChAdOx1-nCov-19 (ChAd) only in individuals older than 60 years, leaving millions of already ChAd-primed individuals with the decision to receive […]

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COVID-19: el resumen semanal (25 de junio al 1 de julio de 2021)

Variante delta: imposible predecir su impacto en Latinoamérica La diseminación de las variantes del SARS-CoV-2 sigue patrones “caprichosos” según el lugar, influyendo factores tales como diferencias genéticas en las poblaciones, el clima, el cumplimiento de las medidas de salud pública, el azar o la competencia con otras variantes circulantes. La […]

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Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021

Summary What is already known about this topic? Ventilation systems can be supplemented with portable high efficiency particulate air (HEPA) cleaners to reduce the number of airborne infectious particles. What is added by this report? A simulated infected meeting participant who was exhaling aerosols was placed in a room with […]

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