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The Omicron subvariant, XBB.1.5, is causing concern among scientists after its rapid spread in the United States in December. The World Health Organization's senior epidemiologist Maria Van ...
A new version of the Omicron variant of the coronavirus is quickly gaining ground in the U.S. The subvariant, called XBB.1.5, has nearly doubled over the last week, claiming a lead over the BQ.1 ...
The Omicron subvariant XBB.1.5 is quickly taking over COVID-19 cases in the U.S. But what is it and is it more dangerous than other forms of COVID-19?
Omicron (B.1.1.529) is a variant of SARS-CoV-2 first reported to the World Health Organization (WHO) by the Network for Genomics Surveillance in South Africa on 24 November 2021. [10][11] It was first detected in Botswana and has spread to become the predominant variant in circulation around the world. [12]
This timeline of the SARS-CoV-2 Omicron variant (November 2021 – February 2022) is a dynamic list, and as such may never satisfy criteria of completeness. Some events may only be fully understood and/or discovered in retrospect. The extensive mutations of its spike proteins make for the Omicron variant.
As of 28 June 2024, classified as a VOI; "Omicron VOC" category no longer declared [236] Other notable variants Lineage B.1.1.207 was first sequenced in August 2020 in Nigeria; [ 237 ] the implications for transmission and virulence are unclear but it has been listed as an emerging variant by the US Centers for Disease Control . [ 28 ]
The January 2022 emergence of the Omicron variant, which was first discovered in South Africa, led to record highs in hospitalizations and cases in early 2022, with as many as 1.5 million new infections reported in a single day. [27] By the end of 2022, an estimated 77.5% of Americans had had COVID-19 at least once, according to the CDC. [28]
What is the BA.2.12.1 omicron variant? The omicron subvariant, an offshoot of the BA.2 variant, now accounts for 1 in 5 new Covid cases, the CDC says.