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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]
On 26 November at an emergency meeting in Geneva, Switzerland WHO's Technical Advisory Group on SARS-CoV-2 Virus Evolution designated PANGO lineage B.1.1.529 a variant of concern (VOC) and gave it the designation Omicron (skipping Nu and Xi, the next letters in the Greek alphabet in keeping with its nomenclature protocol introduced for the Delta variant).
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).
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Omicron will become the dominant coronavirus variant in Europe by the start of 2022 and three to four weeks is needed to determine the severity of the COVID-19 it causes, the World Health ...
The director of the Centers for Disease Control and Prevention shared new data about the rate of spread of the omicron variant in the U.S. CDC director shares update on spread of omicron variant ...
BA.2.86 is an Omicron subvariant of SARS-CoV-2, the virus that causes COVID-19. BA.2.86 is notable for having more than thirty mutations on its spike protein relative to BA.2. [ 1] The subvariant, which was first detected in a sample from 24 July 2023, [ 2] is of concern due to it having made an evolutionary jump on par with the evolutionary ...
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]