As of 30 November 2021, there are 22 confirmed cases of Omicron (B.1.1.529), identified through sequencing or genotyping in England. Working from home where possible, consistently wearing masks in crowded or enclosed spaces, washing your hands regularly and isolating and getting tested if you feel unwell are also vitally important in reducing the impact of COVID-19 this winter. Evidence continues to show that Omicron is transmitting more rapidly than the dominant Delta variant. One dose of any vaccine was associated with a 35% reduced risk of hospitalisation among symptomatic cases with the Omicron variant, 2 doses with a 67% reduction up to 24 weeks after the seconddose and a 51% reduced risk 25 or more weeks after the seconddose. Omicron BA.4 and Omicron BA.5 were designated as variants of concern on 18 May on the basis of an apparent growth advantage over the previously-dominant Omicron BA.2 variant. BA.2, also known as "stealth omicron," is considered a subvariant of omicron. There are thought to be subtle differences in the symptoms that BA. Analysis by the UKHSA suggests it could be substantial, although there is a risk of over-estimating growth advantage in the early stages. A recombinant variant occurs when an individual becomes infected with 2 or more variants at the same time, resulting in a mixing of their genetic material within the patients body. 1. Due to the early nature of the findings, all estimates are subject to significant uncertainty and are subject to change. BA.2.75.2 variant is worrying experts. Here's why - Deseret News UKHSAs most recent variant technical briefing can be found on GOV.UK. As with other kinds of variant, most will die off relatively quickly. An important question is whether BA.2 or BA.3 will become a new dominating "variant of concern". New Omicron BA.2 variant symptoms - What we know so far - Yahoo Life UK A runny nose, gastrointestinal. Professor Susan Hopkins, Chief Medical Advisor at UKHSA said: It is clear that the increasing prevalence of Omicron BA.4 and BA.5 are significantly increasing the case numbers we have observed in recent weeks. As is routine for any new variants under investigation, UKHSAis carrying out laboratory and epidemiological investigations to better understand the properties of this variant. BA.2, also coined as the "stealth" variant, is a relative of Omicron's original variant, BA.1, which tore through the Australian community over Christmas and the New Year period. In addition, UKHSA has published data which shows the detection of cases exhibiting S-gene target failure (SGTF) in recent weeks across the country. We will continue to monitor this situation closely and recommend appropriate public health measures if needed. BA.2.75.2 as a new variant but singled it out as an . Francois Balloux, Professor of Computational Systems Biology and director of the UCL Genetics Institute, said that BA.1 and BA.2 "can be considered as two epidemiologically largely equivalent sub-lineages of Omicron". Its critical that anyone with COVID-19 symptoms isolates and gets aPCRtest immediately. Neither have currently been designated as variants of concern. Until the week beginning 23 November 2021, the weekly count of cases with SGTF was routinely less than 150, making up less than 0.1% of all cases. The technical briefing also includes early analysis of vaccine effectiveness against the Omicron variant compared to Delta.
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