A new version of the Omicron variant of the coronavirus is quickly gaining ground in the U.S. The subvariant, called XBB.1.5, has nearly doubled over the last week, claiming a lead over the BQ.1 and BQ.1.1 subvariants which had just gained dominance in November.
Gryphon variant XBB. The arrow shows a dramatic increase in disease. "XBB.1.5 Variant" text with images of coronavirus.
recently wrote."This rate is higher than we've seen with any other subvariant this year given our immunity wall," she added.from the Centers for Disease Control and Prevention, XBB.1.5 is now responsible for 40.5% of new cases nationwide. In the Northeast, the agency estimates the subvariant is causing 75% of new cases.
There is a lot that is still unknown about XBB.1.5, but experts have said it does look like it is more transmissible than other Omicron subvariants. “The ones that start becoming predominant usually are,” Dr. Monica Gandhi, an infectious disease specialist and a professor of medicine at the University of California, San Francisco, told Yahoo News.
“Anything that lets you enter the whole cell more quickly is more transmissible basically, [and] binds more tightly ... and then you know, you get infected,” Gandhi said.
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