March 27, 2023

What is the new Covid variation XBB.1.5, which accounts for more than 40% of US cases?

new Covid variation

Over 40% of Covid-19 cases in the United States are now caused by Omicron XBB. 5 — a variant which has concerned experts. “Ironically, probably the worst variant that the world is facing right now is actually XBB,” Dr Michael Osterholm said.

XBB.1.5 is a ‘super variant’, the ‘next big one’, which is causing a surge in hospitalisation in New York, according to Virologist Eric Feigl Ding.

XBB.1.5 is a new recombinant strain and is both immune-evasive and better at infecting than BQ.1 and XBB, the virologist said. It is not ‘typical Omircon’, but a special recombination mixture variant that is further mutated.

“Multiple models show XBB.1.5 is much worse in transmission R-value and infection rate than previous variants,” Eric Fiegl Ding tweeted.

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