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Fungal STI Outbreak: Minnesota Faces Nation's Largest
12 Feb
Summary
- Minnesota is experiencing the nation's largest known outbreak of TMVII.
- TMVII is a rare fungal sexually transmitted infection causing ringworm.
- Over 30 cases are confirmed or suspected in the Twin Cities metro area.
Minnesota is currently experiencing what state health officials describe as the nation's largest known outbreak of TMVII, a sexually transmitted fungal skin infection. This condition, formally known as Trichophyton mentagrophytes genotype VII, is identified as the only known fungal-based sexually transmitted disease and can lead to severe ringworm.
The first reported case of TMVII emerged in New York City in 2024. Minnesota documented its initial case in July 2025, when a patient presented with a genital rash. As of now, the Twin Cities metro area has seen over 30 confirmed or suspected cases, with additional scattered instances reported in other major U.S. cities.
Symptoms typically manifest as ringworm on the arms, buttocks, genitals, legs, and trunk, appearing as round, coin-like rashes that are red, irritated, and sometimes feature bumps or pimples. These rashes can be painful and potentially lead to scarring or more serious infections. The outbreak appears most prevalent among men who have sex with men.
Health authorities strongly advise individuals diagnosed with TMVII to inform their sexual partners. They are also urged to avoid all skin-to-skin contact, including sexual contact, until treatment is completed, which can take up to three months. Sharing clothing and personal items should also be avoided by those exhibiting symptoms.
