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NewsTimes of San DiegoAugust 10, 2026San Diego

San Diego County confirms first case of Clade I mpox

San Diego County health officials have identified the first local case of Clade I mpox in a resident who recently traveled internationally. The county is monitoring close contacts of the individual and emphasizes that the risk to the general public remains very low.

public healthmpoxvaccinationinfectious diseaseSan Diego County
Read the full story at Times of San Diego

Why It Matters

This is the first reported instance of the more severe strain in San Diego, prompting health officials to urge vaccination and symptom monitoring for those at risk.

Key Facts

  • The first case of Clade I mpox in a San Diego County resident was confirmed this week.
  • The individual likely contracted the virus while traveling internationally.
  • County health officials are currently monitoring all known contacts of the infected person.
  • No contacts of the infected person have reported symptoms to date.
  • The JYNNEOS two-dose vaccine is recommended for protection against both Clade I and Clade II mpox.
  • Clade I mpox is considered potentially more severe than the Clade II strain present in the region since 2022.
  • San Diego County has recorded 27 cases of Clade II mpox so far this year.
  • Clade II cases in the county this year have exclusively involved men aged 17 to 53.
  • Residents can receive updates by texting 'COSD MPOX' to 98256.

Who's Mentioned

other17“Minimum age of Clade II cases.”personDr. Sayone Thihalolipavan“County Public Health Officer.”other53“Maximum age of Clade II cases.”locationSan Diego County“Local government jurisdiction reporting the case.”other27“Number of Clade II cases reported in San Diego this year.”other98256“Text line for mpox updates.”organizationCalifornia Department of Public Health“Confirmed the diagnosis.”otherJYNNEOS“Two-dose vaccine recommended for protection.”