CDC COVID Data Tracker
网页CDC’s home for COVID-19 data. Visualizations, graphs, and data in one easy-to-use website.
SARS-CoV-2 B.1.1.529 (Omicron) Variant — United States...
网页2021年12月16日 · SARS-CoV-2 variant B.1.1.529 (Omicron), first reported to WHO on November 24, 2021, has been designated a variant of concern. Mutations in Omicron might increase transmissibility, confer resistance to therapeutics, or partially escape infection- or vaccine-induced immunity.
SARS-CoV-2 B.1.1.529 (Omicron) Variant Transmission Within ...
网页2022年3月3日 · The B.1.1.529 (Omicron) variant, first detected in November 2021, was responsible for a surge in U.S. infections with SARS-CoV-2, the virus that causes COVID-19, during December 2021–January 2022 (1).
Genomic Surveillance for SARS-CoV-2 Variants: Circulation of Omicron …
网页2023年6月15日 · CDC has used national genomic surveillance since December 2020 to monitor SARS-CoV-2 variants that have emerged throughout the COVID-19 pandemic, including the Omicron variant. This report summarizes U.S. trends in variant proportions from national genomic surveillance during January 2022–May 2023.
The CDC slashes estimates of omicron's prevalence in the U.S.
网页2021年12月29日 · New data from the CDC released on Tuesday shows that while omicron remains the dominant variant, delta — which is the more severe strain — is still a worrisome driving force behind the...
Omicron variant : what you need to know - CDC Stacks
网页2021年12月9日 · On November 30, 2021, the United States designated Omicron as a Variant of Concern, and on December 1, 2021 the first confirmed U.S. case of Omicron was identified. CDC has been collaborating with global public health and industry partners to learn about Omicron, as we continue to monitor its course.
网页Advisory summarizes current knowledge about Omicron and provides recommendations on how to detect the Omicron variant within the United States as soon as possible to mitigate its spread. Background A new SARS-CoV-2 variant, lineage B.1.1.529, was first detected in Botswana on November 11, 2021, and South Africa on November 14, 2021.
First Confirmed Case of Omicron Variant Detected in the United …
网页2021年12月1日 · This will be the first confirmed case of COVID-19 caused by the Omicron variant detected in the United States. On November 26, 2021, the World Health Organization (WHO) classified a new variant, B.1.1.529, as a Variant of Concern and named it Omicron and on November 30, 2021, the United States also classified it as a Variant of Concern.
Early Warning Surveillance for SARS-CoV-2 Omicron Variants, …
网页2022年11月18日 · Omicron BA.2 was detected during January 5–September 30, 2022, and caused 1,514 cases, 27.3% of which were reinfections. Since March 2022, other Omicron subvariants have been identified within SIREN. The XE BA.1/BA.2 recombinant was detected from 4 primary infections on March 16, 2022.
Duration of Infectious Virus Shedding by SARS-CoV-2 Omicron …
网页2022年3月15日 · The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant of concern belonging to the Pango lineage B.1.1.529, known as the Omicron variant, has spread rapidly worldwide (1,2). Several reports describe high infectivity and transmissibility of Omicron (3,4).
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