Coronavirus variant XBB.1.5 rises in the United States — is it a global threat?

Nature quoted Jennifer Surtees in an article on the impact of the coronavirus variant XBB.1.5 in the United States and beyond. Gauging XBB.1.5’s impact might not be straightforward, owing to the drop-off in testing for COVID-19, said Surtees. “I think that we are truly flying blind right now. We have no idea how many cases are really out there,” she said.