2023年1月6日 · XBB.1.5 is the most transmissible variant of COVID-19 yet. As 2023 begins, it’s causing the majority of cases in the U.S., but we aren’t seeing a surge like omicron caused last winter.

2023年5月11日 · Nature Communications - XBB is the first recombinant, globally dominant variant of SARS-CoV-2. Here, the authors examine the variant’s origins and virological properties, showing it is the...

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...

2024年2月1日 · On September 12, 2023, CDC’s Advisory Committee on Immunization Practices recommended updated 2023–2024 (updated) COVID-19 vaccination with a monovalent XBB.1.5–derived vaccine for all persons aged ≥6 months to …

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.

2025年3月1日 · Early estimates of updated 2023–2024 (monovalent XBB.1.5) COVID-19 vaccine effectiveness against symptomatic SARS-CoV-2 infection attributable to co-circulating Omicron variants among immunocompetent adults–Increasing community access to testing program, United States, September 2023 – January 2024

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.

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...

2023年1月13日 · Now, a newcomer dubbed XBB.1.5 seems poised for a rise to dominance. According to CDC estimates, it accounts for more than 80 percent of new cases in parts of the northeastern United States. For...

2025年3月5日 · Antibody binding and avidity against ancestral and XBB.1.5 antigens significantly increased after vaccination. However, antibody depletion experiments showed that most of the response was cross-reactive to the ancestral spike, and only low levels of XBB.1.5-specific antibodies to the spike or the receptor-binding domain were detected.