US health experts have voiced concern over the rapid growth of the new Omicron sublineage XBB.1.5, advising the public to stay informed but not alarmed as they work to learn more.Over the month of December, the percentage of new COVID-19 infections in the country caused by XBB.1.5 rose from an estimated 4 per cent to 41 per cent."That's a stunning increase," Dr Ashish Jha, the White House COVID-19 response coordinator, wrote in a Twitter thread.
Load More
Load More