Omicron Xbb Variant South Africa 2024. Our phylogenetic analysis suggests that xbb.1.5 evolved from xbb.1. If you got a bivalent booster.
Xbb.1.5 is derived from the omicron variant ba.2, and while the current bivalent vaccine was developed for the ba.5 variant, it has been shown to generate antibodies that recognize ba.2. Variant of concern omicron in south africa.