2023年1月6日 · What is XBB.1.5? The XBB family of variants emerged a few months ago and caught virologists’ attention because it contains more mutations to evade immunity than any other variant. The XBB.1.5 variant has a mutation virologists believe is helping the virus better bind to cells and thus be more transmissible. What’s happening now with this ...

2023年5月11日 · Our multiscale investigation provides evidence suggesting that XBB is the first observed SARS-CoV-2 variant to increase its fitness through recombination rather than substitutions. The SARS-CoV-2...

2022年11月13日 · The XBB variant of COVID-19, which comes from the BA.2 sublineage of the SARS-CoV-2 virus, is slowly gaining traction worldwide and increasing COVID-19 cases in some countries. In the United States, New York could be an emerging hotspot for the spread of XBB.

2023年1月17日 · The XBB.1.5 subvariant — nicknamed ‘Kraken’ — is arguably the most genetically rich and most transmissible SARS-CoV-2 omicron subvariant yet.

2024年2月8日 · Circulation of SARS-CoV-2 Omicron XBB has resulted in the emergence of XBB.1.5, a new Variant of Interest. Our phylogenetic analysis suggests that XBB.1.5 evolved from XBB.1 by acquiring...

2023年2月10日 · A SARS-CoV-2 strain called XBB.1.5 (nicknamed “Kraken”), a descendent of the Omicron variant, has been described as the most transmissible strain of the virus so far. Yale Medicine doctors tell you what you need to know.

2023年1月3日 · The variant is XBB.1.5, a highly contagious "recombinant" variant that spawned from two different BA.2 variants. It is related to the XBB variant , which was previously behind a COVID surge in...

2023年1月3日 · 奥密克戎变异株是目前全球流行的新冠病毒主要变异株，XBB是奥密克戎变异株亚型，于2022年8月在印度首次被发现。 XBB可进一步细分为XBB.1、XBB.1.5等子系毒株。 在美国，XBB.1.5已成为头号流行毒株。 美国疾病控制与预防中心（CDC）在美东时间2022年12月30日公布的数据显示，12月25日至31日，XBB.1.5预计占美国新冠病例的40.5%，比前一周（21.7%）几乎翻一番。 全球共享流感数据倡议组织（GISAID）的数据显示，截至2022年12 …

2023年2月2日 · Now there is XBB.1.5—nicknamed the Kraken—which derived from the BA.2 Omicron subvariant. It is part of the XBB family of variants that emerged a few months ago and caught virologists’ attention because it contains more mutations to evade immunity than other variants seen so far.

2023年1月10日 · According to Centers for Disease Control (CDC) estimates, nearly 28% of Covid cases in the US in the first week of January were caused by XBB.1.5. It had previously estimated as many as 40% of...