New XBB.1.5 variant’s spread has caught the attention of health officials.
Is XBB.1.5 the same variant that’s been ripping through China?No. Swartzberg said China is primarily stricken with the omicron variant BF.7, which accounts for only about 2% of U.S. cases.Jha said that if you had COVID before July, or your last vaccine was before the updated omicron bivalent booster in September, “your protection against an XBB.1.5 infection is probably not that great.” Currently only about 15% of people in the U.S. have had the updated booster.
But the XBB.1.5 cases are just taking off now, and Jha said “we don’t know” yet if XBB.1.5 is more dangerous than earlier variants.A BA.4 is history and BA.5 only accounts for about 4% of cases, down from 80% a year ago. Jha said this week “we will soon have more data on how well vaccines neutralize XBB.1.5, but right now, for folks without a very recent infection or a bivalent vaccine, you likely have very little protection against infection, and for older folks, diminishing protection against serious illness.
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