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Feb 6, 2023 · Variants in the United States. CDC is working with many public health officials and partners to monitor all variants. CDC’s COVID Data Tracker publishes estimates of how common variants are at national and regional levels. This data can change over time as more information is available.
Sep 1, 2023 · Below is a list of—and information about—some of the variants that have been top-of-mind. Omicron and its subvariants While the original Omicron strain (BA.1) is no longer circulating, Omicron subvariants are now driving most of the country’s SARS-CoV-2 infections.
Sep 1, 2023 · Throughout the COVID-19 pandemic, many variants of SARS-CoV-2 have been found in the United States and globally. Scientists use multiple classification systems to describe and communicate similarities and differences between SARS-CoV-2 viruses. On This Page. Key Definitions. Types of Classification. Recombinants. Summary of Variant Classifications.
Variants of severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2) are viruses that, while similar to the original, have genetic changes that are of enough significance to lead virologists to label them separately. SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19).
Dec 18, 2023 · Currently circulating COVID-19 Variants under Monitoring (VUMs) as of 10 February 2024. Currently all the VUMs are de-escalated due to their prevalence less than1% at the global level and in all WHO regions for 8 consecutive weeks.
Mar 27, 2024 · Currently circulating variants of concern (VOCs) as of 15 March 2023. Note: To better reflect the current variant landscape, which is dominated by Omicron descendent lineages, WHO updated its tracking system and working definitions of VOCs and VOIs on 15 March 2023. 4 October 2023.
Nov 15, 2023 · In late 2023, the World Health Organization listed nine variants as circulating at the time. More than 50 variants have been identified; although some are no longer spreading. COVID...
