The U.S. Centers for Disease Control and Prevention on Friday added a 16th variant to the list of those it's tracking—BN.1.
The newly singled-out strain was estimated to comprise just over 4% of U.S. infections through Saturday, making it the sixth most common variant in the country. It came in just above BA.4.6, a descendant of Omicron spawn BA.4, which was prominent globally this summer.
