The United States’ first known case of a more severe strain of mpox was confirmed in California, the US Centers for Disease Control and Prevention said Saturday. The risk of clade I mpox to the public remains low,

The unidentified patient had recently returned from Africa, where the virus has caused a deadly epidemic, health officials said.

U.S. health officials confirmed on Saturday the first case of a more severe strain of mpox that infected an individual who recently traveled to Africa. California health authorities identified the first known case of clade I mpox in the U.S. through laboratory testing. The person was treated in San Mateo County, according to the California…