Tag: BA.2.75

Clinical Outcomes of Omicron subvariants including XBB, the dominant SARS-CoV-2 in the US

Posted on by Jesse Santiano, M.D.

The Omicron subvariant XBB.1.5 is the dominant cause of COVID-19 in the US. It is highly infectious and resistant to previous vaccinations, therapeutic monoclonal antibodies, and immunity from past infections. Being highly infectious is concerning, but does it have a high fatality rate? That is what is more important. Today, a new study was released…

The Dominant Omicron XBB1.5 Evades Antibodies and has Stronger ACE2 Binding

Posted on by Jesse Santiano, M.D.

The XBB 5.1 is the most dominant SARS-CoV-2 Omicron subvariant in the US. According to the latest CDC COVID Data Tracker as of Dec 31, 2022, it causes 41% of COVID-19.[1] Origin of the XBB A study from Japan traced the origin of the XBB subvariant. It emerged after two co-circulating BA.2 lineages, BJ.1 and…