The Omicron offshoot XBB15 is causing 85% of new Covid cases in the U.S., according to new estimates from the U.S. Centers for Disease Control and Prevention...
BANGKOK (The Nation/Asia News Network): One Thai and one foreign national have been infected with a new Omicron subvariant – XBB.1.5 – that emerged from two lineages of the Covid-19 subvariant, the Medical Science Department announced on Wednesday (Feb 15).