Summary The SARS-CoV-2 mRNA vaccines have shown remarkable clinical efficacy, but questions remain about the nature and kinetics of T cell priming. We performed longitudinal antigen-specific T cell analyses in healthy individuals following mRNA vaccination. Vaccination induced rapid near-maximal antigen-specific CD4+ T cell responses in all subjects after the first vaccine […]
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Schools reopened during the fall of 2020 with various approaches to mitigate SARS-CoV-2 infection. At that time, the US Centers for Disease Control and Prevention (CDC) recommended a 14-day quarantine without testing for close contacts of anyone diagnosed with COVID-19. However, data indicated that the incubation period for SARS-CoV-2 infection […]
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La variante B.1.1.222 ha producido el 80% de los casos actuales del Covid-19, por lo que ha llamado la atención de la OMS. Sin embargo, aún no se esclarece si es capaz de aumentar la transmisibilidad de la enfermedad La variante B.1.1.222, identificada por vez primera en nuestro país, es una […]
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Créditos: Comité científico Covid
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The most probable origin of the SARS-CoV-2 virus was an intermediary animal host, states a joint report from the World Health Organization and experts from China and 10 other countries. They said intermediary hosts were “likely to very likely” to have transmitted the virus to humans. Similar viruses have been […]
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Centers for Disease Control and Prevention (CDC) de Estados Unidos y la Organización Mundial de la Salud (OMS) han establecido nuevos criterios para clasificar las variantes del SARS-CoV-2, el virus que causa la COVID-19. Las nuevas designaciones son: variante de interés, variante de preocupación y variante de gran consecuencia. Una […]
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Two U.K. cohort studies reported excess risk for death among those infected with B.1.1.7. Several emerging SARS-CoV-2 variants of concern (VOCs) appear to have heightened infectivity and ability to evade natural or vaccine-derived immunity. Among the most prevalent of these is the B.1.1.7 VOC, first isolated in England in October […]
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Una de las principales características de los virus es su tendencia a la mutación. De manera constante cambian y eso complica su atención. Por lo mismo, desde que el SARS-CoV-2 fue identificado se han notificado diversas transformaciones. Aunque la mayoría no son drásticas otras sí cambian por completo a la […]
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