Medical Health Cluster


COVID-19 persistente en México: estudio encuentra que las vacunas protegen y las reinfecciones aumentan riesgo de secuelas

En el primer estudio que caracteriza la epidemiología de COVID-19 persistente en México se encontró que el número de dosis de vacuna, en comparación con los individuos no vacunados, mostró un efecto protector; y, además, la reinfección aumentó el riesgo de COVID-19 persistente.[1] El análisis retrospectivo estimó bajo distintas definiciones (tabla 1) […]

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COVID-19 Vaccine Effectiveness

Updated COVID-19 vaccine boosts waning immunity The virus that causes COVID-19 is always changing, and protection from infection or COVID-19 vaccination declines over time. Receiving an updated 2023-2024 COVID-19 vaccine can restore and provide enhanced protection against the variants currently responsible for most infections and hospitalizations in the United States. New […]

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Early Estimates of Updated 2023–2024 (Monovalent XBB.1.5) COVID-19 Vaccine Effectiveness Against Symptomatic SARS-CoV-2 Infection Attributable to Co-Circulating Omicron Variants Among Immunocompetent Adults — Increasing Community Access to Testing Program, United States, September 2023–January 2024

Summary What is already known about this topic? In September 2023, CDC’s Advisory Committee on Immunization Practices recommended updated 2023–2024 (monovalent XBB.1.5) COVID-19 vaccination for all persons aged ≥6 months to prevent COVID-19, including severe disease. Many variants co-circulated during fall 2023; the JN.1 lineage became predominant in January 2024. […]

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