Jan 1, 2023 · Recent BQ and XBB subvariants of SARS-CoV-2 demonstrate dramatically increased ability to evade neutralizing antibodies, even those from people who received the bivalent mRNA booster or who are immunized and had previous breakthrough Omicron infection.

Jan 25, 2023 · First, the bivalent BA.4–BA.5 vaccine consistently elicited higher neutralizing responses against BA.5-derived sublineages (BA.4.6, BQ.1.1, and XBB.1) and the BA.2-derived sublineage...

Nov 11, 2022 · In late October, the UK Health Security Agency assigned variant designations to two new omicron “grandchildren”: BQ.1 and XBB. This means they will be monitored by health authorities, but are not...

May 11, 2023 · 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...

Dec 21, 2022 · Persons who received either one or two monovalent Covid-19 vaccine boosters had much lower neutralization activity against omicron subvariants (especially against BA.2.75.2, BQ.1.1, and XBB,...

Jun 27, 2023 · Although some BA.2 descendants, BN.1, CA.3.1, CH.1.1, XBB.1 and XBB.1.5 exhibited the lowest neutralization sensitivity, which might be explained by their antigenic distance from BF.7, their ...

Recent BQ and XBB subvariants of SARS-CoV-2 demonstrate dramatically increased ability to evade neutralizing antibodies, even those from people who received the bivalent mRNA booster or who are immunized and had previous breakthrough Omicron infection.

Dec 16, 2022 · To date, XBB and XBB.1 and BQ.1, and BQ.1.1 represent the most resistant SARS-CoV-2 variants. BQ subvariants have evolved from Omicron BA.5, whereas XBB subvariants are recombinants of...

Mar 1, 2023 · Several B.1.1.529 (omicron) subvariants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are emerging and have become the dominant strains, such as BF.7, BQ.1, BQ.1.1, and XBB.

Oct 27, 2022 · Based on currently available evidence, the TAG-VE does not feel that the overall phenotype of XBB* and BQ.1* diverge sufficiently from each other, or from other Omicron sublineages with additional immune escape mutations, in terms of the necessary public health response, to warrant the designation of a new variant of concern and assignment of a ...