"The first known case of Clade I mpox was identified in a San Francisco resident earlier this month who recently had close contact with an international traveler, according to the California Department of Public Health."
"Clade I carries a higher mortality rate, estimated between 1% and 10%, compared to less than 1% to 4% for Clade II, which drove the 2022 global outbreak."
"State health officials say the overall risk to the public remains low but are strongly encouraging vaccination for those at higher risk, including gay and bisexual men."
"So far in 2026, the state is averaging 14.5 weekly cases, more than double the rates seen in prior years, compared to 5.8 in 2024 and 3.4 in 2025."
The first case of mpox Clade I was identified in a San Francisco resident who had close contact with an international traveler. The patient, unvaccinated and hospitalized, is improving. Clade I has a higher mortality rate of 1% to 10%, compared to Clade II's less than 1% to 4%. Mpox spreads through close skin-to-skin contact, with symptoms resembling the flu followed by a painful rash. Vaccination is encouraged for high-risk individuals and travelers to affected areas. California has seen a rise in Clade II cases, averaging 14.5 weekly cases in 2026.
Read at sfist.com
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