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the COVID-19 pandemic. Virus variants can be passed from one person to . another. COVID-19 vaccines protect people against . severe illness, including disease caused by Delta and other variants circulating in the U.S. Why do new COVID-19 variants keep emerging? It is normal for a virus like SARS-CoV-2, which . causes COVID-19, to evolve into ...
The number of analyzed sequences in the preceding two weeks that correspond to each variant group. This number may not reflect the complete breakdown of cases since only a fraction of all cases are sequenced.
May 15, 2024 · With COVID-19, new variants continue to emerge, with some variants disappearing while others will persist. The SARS-CoV-2 variants are classified into four groups: new variants of concern, variants of high consequence, variants being monitored and variants of interest.
Jul 27, 2021 · COVID-19 vaccination is our most effective strategy to prevent infection and severe disease: Vaccination is a priority national strategy to interrupt SARS-CoV-2 transmission, protect personal and public health, and preserve healthcare system capacity. COVID-19 vaccines are safe and recommended for all persons aged 12 years of age and older ...
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Aug 13, 2021 · Among hospitalized or fatal breakthrough cases, 74% among persons aged ≥65 years. Variants of concern (%) among breakthrough cases similar to national genomic surveillance. COVID-NET data on COVID-19-associated hospitalizations among aged persons ≥18 years — ~32% of all vaccinated cases are immunocompromised vs. 11% of unvaccinated cases.
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The data we currently have available show us that COVID-19 vaccines are still very effective at preventing serious illness and death against all of the current variants of concern. Currently, the delta variant is dominant in the Americas and the rest of the world, and the WHO-approved COVID-19 vaccines are highly effective in protecting against ...
WHO Virus Evolution Working Group. Strengthen mechanisms to identify and prioritize (potential) relevant mutations. Identify relevant mutations early and study the potential impacts related to viral characteristics and effectiveness of available and future countermeasures. Evaluate possible mitigation strategies to reduce the negative impact of ...
