Forewarned, forearmed; to be prepared is half the victory. – Miguel de Cervantes
There’s a new kid on the block of COVID subvariants that’s on the rise and one i called XBB—or Gryphon—is getting a lot of attention and there’s a chance it could overtake everything else out there.
Via MSN.com
XBB is one of the “new class” of Omicron variants that are spreading fast right now, says Thomas Russo, M.D., professor and chief of infectious disease at the University at Buffalo in New York. That includes BQ.1.1, BQ.1, BQ.1.3, BA.2.3.20, and XBB.
“XBB is a hybrid version of two strains of the BA.2 form of Omicron,” explains Amesh A. Adalja, M.D., a senior scholar at the Johns Hopkins Center for Health Security. It’s currently “spreading efficiently in Singapore,” he adds.
The variant was first detected in August 2022 in India, and has been detected in more than 17 countries since then, including Australia, Bangladesh, Denmark, India, Japan and the U.S., per Singapore’s Ministry of Health.
XBB is thought to be able to evade antibody protections of these newly emerged COVID variants, according to a pre-print study from researchers in China. That study said that the new strains of Omicron, and XBB in particular, “are the most antibody-evasive strain tested, far exceeding BA.5 and approaching SARS-CoV-1 level.
“These variants are evolving to evade protection,” Dr. Russo says. The bivalent booster is “likely going to be protective against severe disease” with XBB, but will be “imperfect against preventing infection,” Dr. Russo says. “Even with immune-evasive variants, vaccine protection against what matters most—severe disease—remains intact.
It’s not over and probably won’t be for a very long time.