A person in California tested positive for mpox clade I, the first time the strain has been reported in the U.S.

A person in California has tested positive for a form of mpox causing a widespread epidemic in Africa, the state’s Department of Public Health reported on Saturday. It is the first known case in the United States.

NEW YORK — Health officials said Saturday they have confirmed the first U.S. case of a new form of mpox that was first seen in eastern Congo. The person had traveled to eastern Africa and was treated in Northern California upon return, according to the ...