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,

Health officials on Saturday said they've identified the first person in the U.S. infected with an mpox strain that has recently prompted global health alerts over concerns about its spread, severity and transmissibility.

California has reported the first US case of mpox - formerly known as monkeypox - that is part of a new outbreak. The state's department of health, the CDPH, said the new case was from the Clade I strain - different from the Clade II strain that has been in circulation in the US since 2022.