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Omicron

More than 300 Omicron variants in circulation globally

BQ.1 and BQ.1.1 are among the more than 300 sub-lineages of the Omicron variant circulating globally, 95 percent of which are direct descendants of BA.5, according to the WHO. In early July, BA.5 became the dominant subvariant of the coronavirus circulating in the United States, but in October it started giving way to BQ.1 and …

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WHO reluctant to label new Omicron strains as variants of concern

Despite the fact that they’re driving a spurt in COVID cases, the World Health Organization (WHO) says XBB and BQ.1 are not different enough from each other, or from other Omicron lineages, to warrant labelling them new variants of concern. Variants of concern are those that show increased transmissibility, virulence or change in clinical disease, …

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Scientists create a deadlier Omicron variant

Twitter exploded with outrage last week about a study in which scientists engineered the spike protein of Omicron—the fast-spreading but relatively mild variant of SARS-CoV-2 that’s now pervasive—into a deadlier strain of the coronavirus found in Washington state early in the pandemic. www.science.org/content/article/news-glance-climate-justice-ethical-mask-wearers-and-cdc-under-trump The objective was to learn whether the protein alone explains Omicron’s lower …

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BQ.1 Omicron strains increasing in prevalence

United States (US) health regulators on Friday estimated that BQ.1 and closely related BQ.1.1 accounted for 16.6% of coronavirus variants in the country, nearly doubling from last week, while Europe expects them to become the dominant variants in a month. The European Centre for Disease Prevention and Control said the variants are likely to drive …

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Omicron subvariants becoming dominant strains

The subvariants known as BQ.1.1, BQ.1, BQ.1.3, BA.2.3.20 and XBB are among the fastest spreading of the main Omicron lineages. Based on UK data, the BQ variants, as well as BA.2.75.2 and BF.7 are the most concerning due to their growth advantage and immune evasiveness, the US health security agency has said. BF.7 has also …

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Most common current COVID lineages now derive from Omicron strain

Last year, the World Health Organization (WHO) began assigning Greek letters to worrying new variants of the coronavirus. The organization started with Alpha and swiftly worked its way through the Greek alphabet in the months that followed. When Omicron arrived in November, it was the 13th named variant in less than a year. But 10 …

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Yet another COVID variant – Omicron BA.4.6

Another new COVID variant is spreading – here’s what we know about omicron BA.4.6 BA.4.6, a subvariant of the omicron COVID variant which has been quickly gaining traction in the US, is now confirmed to be spreading in the UK. The latest briefing document on COVID variants from the UK Health Security Agency (UKHSA) noted …

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Omicron sub-variant now sweeping India; The latest health stories from around the world

An Omicron sub-variant that is spreading rapidly in India and has been detected in several European countries may be more effective than other coronavirus strains at overcoming immunity provided by prior infection and vaccines. BA.2.75, which has been nicknamed Centaurus, appeared to have mutated in a way that could indicate “major immune escape”, said the …

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Queen Elizabeth tests positive for COVID-19; the latest health stories from around the world

Queen Elizabeth II has been infected with the coronavirus, Buckingham Palace said on Sunday, becoming one of the world’s most prominent figures to battle the virus and rattling the country she has led for seven decades. The palace issued few details about the condition of the queen, who turns 96 in April. “Buckingham Palace confirm …

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“Human challenge” study grants insights into COVID treatments and variants; the latest health stories from around the world

Earlier this month, researchers in the United Kingdom posted the results of a first-of-its-kind study in which healthy young volunteers were purposely infected with an early strain of the pandemic coronavirus (www.science.org/content/article/scientists-d) As hoped, none of the participants got seriously ill, and scientists were able to closely track their symptoms and gain unique insight into how both …

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