The county of San Mateo has now had the first reported case of clade I mpox in the United States, according to the California Department of Public Health (CPDH). What is mpox? Mpox is an infectious disease that can cause a painful rash,

There is no evidence that the strain is spreading in California or the U.S., and the risk of contracting Clade I mpox in the U.S. remains low.

San Mateo County health officials have announced the nation’s first known case of a severe form of mpox that has fueled an outbreak of the disease across Eastern and Central Africa.