Health experts still learning about omicron subvariant, now dominant in Northeast
Wednesday, January 25, 2023 09:51 AM
As a version of COVID-19’s omicron variant —the XBB.1.5 subvariant — grows more prevalent in some parts of the U.S., health experts say it likely escapes immune protection better than previous mutations, though it is still unclear whether it causes more severe illness. Read more.