San Diego County Resident Diagnosed with More Severe Mpox Strain

San Diego, CA, August 11, 2026 —

A resident in San Diego County has been diagnosed with Clade I mpox, a strain of the virus known to be more severe and originating from Central Africa, health officials have announced. The individual is believed to have contracted the virus during international travel.

County health officials are currently monitoring individuals who had close contact with the diagnosed resident. The risk to the general public from this case is assessed as very low. However, authorities are urging anyone who develops symptoms consistent with mpox, particularly after recent international travel or potential exposure, to seek prompt medical attention. Health officials also recommend considering vaccination for those at risk.

Mpox is a viral disease that can cause fever, rash, and swollen lymph nodes. The Clade I strain, while less common in many regions, has been associated with more severe outcomes in some cases. Public health guidance emphasizes that mpox can spread through close, personal, skin-to-skin contact with the rash of an infected person, as well as through contact with contaminated materials such as bedding or clothing. Respiratory secretions can also play a role if close face-to-face contact occurs.

San Diego County health officials are working to contain any potential spread by identifying and advising contacts. The focus remains on public awareness and ensuring that individuals who may have been exposed or are experiencing symptoms receive appropriate medical evaluation and care. Information regarding the specific timeline of travel or the exact location of international travel for the diagnosed individual was not immediately available.

Story summarized from the original created by City News Service on www.kpbs.org, see more information here.

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