There is no evidence that the mpox clade I strain is spreading between people in California or elsewhere in the U.S.

A new strain of mpox has been confirmed on American shores after a traveler returned to California from a visit to Africa, ...

The first case of a new strain of mpox in the United States has been reported in San Mateo County, officials said Saturday.

Health officials in California have confirmed the first domestic case of a more severe strain of mpox in a traveler from ...

San Mateo County health officials said on Saturday they have reported the first known case of clade I mpox in California and ...