A more severe strain of mpox has been detected in the U.S. for the first time The patient was traveling from East Africa, where the mpox disease is endemic. The CDC says the strain does not present a high risk to the general population. NPR

California's health department confirmed the case through lab testing. The patient contracted it after traveling from East Africa, where there has been an outbreak of the clade I strain. The person was treated in San Mateo County and then released. The person is at home recovering, the CDC said Saturday.

The CDC says the strain presents a low risk to the general public. "Casual contact, like you might have during travel, is unlikely to pose significant risks for transmission of mpox," it said.

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