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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.
An updated version of Moderna’s Covid-19 booster shot appears to work against the fast-spreading omicron subvariants BA.4 and BA.5, the company said in a news release Wednesday.. The bivalent ...
COVID-19 booster shots that target the highly contagious Omicron variant — which managed to infect 90 million people worldwide in just 10 weeks — are around the corner.
It had a variant called B.1.1.7 that caused more severe disease. Alpha circulated from late 2020 to late 2021 before it was outcompeted by Delta and then Omicron. Our current vaccines are ...
In February 2021, the FDA issued an emergency use authorization (EUA) for bamlanivimab and etesevimab administered together for the treatment of mild to moderate COVID-19 in people twelve years of age or older weighing at least 40 kilograms (88 lb) who test positive for SARS‑CoV‑2 and who are at high risk for progressing to severe COVID-19.
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).
BA.4 and BA.5 appear to be more transmissible than the original Omicron variant and have a better shot at evading existing immunity, given a new surge in South Africa.
The XEC variant has become the second-most prevalent strain in the country, representing more than 1 in 10 cases, according to data from the Centers for Disease Control and Prevention (CDC). (It ...