XBB.1.5 appears to be about five times more contagious than an earlier omicron variant, which was five times more contagious than the original virus.
The primary concern with any new variant is whether vaccines and treatments will remain effective.
But"anytime you have a new creature that spreads like this, person to person so rapidly, it puts a big stress on our infrastructure – medical facilities and personnel who are chronically short-staffed. That's a problem for everybody," he said., showing that COVID-19 booster shots, designed to target two different variants, still provide protection against this new one – and better protection than a vaccine directed at just the original virus.
In the northeast, particularly New York, XBB.1.5 now accounts for the vast majority of COVID-19 infections, Griffin said.
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