Covid Variant JN.1 Now Accounts for Nearly Half of U.S. Cases

As the holiday season winds down and Covid-19 cases start to pick up, a variant called JN.1 has now become the most common strain of the virus spreading across the United States.JN.1, which emerged from the variant BA.2.86 and was first detected in the United States in September, accounted for 44 percent of Covid cases…