Minnesota Identified as Epicenter for Rare Sexually Transmitted Ringworm

Minnesota is currently grappling with the most significant outbreak of a rare, sexually transmitted fungal infection in the United States. Health department data shows that more than 30 confirmed or suspected cases of the infection, known as trichophyton mentagrophytes genotype VII (TMVII), have been identified in the Twin Cities area since last July.

While the fungus was first detected in New York City in early 2024, the concentrated cluster in Minnesota is the largest of its kind. Health experts have noted that the infection is appearing most frequently among men who have sex with men, particularly those who use anonymous dating apps or have a history of other STIs.

What sets TMVII apart from common skin issues is its classification as the only known sexually transmitted fungal infection. It creates painful, itchy, red rashes that look like coin-sized circles, which are often misdiagnosed as eczema or psoriasis. If the infection is allowed to progress, it can lead to open sores and severe inflammation. “Some patients might develop painful and persistent rashes that can lead to scarring or worsening infections that need to be treated with antibiotics,” health officials warned recently. The fungus spreads easily through genital contact but can also show up on the face, torso, and limbs if spores are transferred by touch.

Getting rid of the infection is a long and difficult process. Because the fungus looks so similar to other strains, many labs cannot identify it without specialized, advanced testing. Treatment typically requires several weeks or even months of oral medication.

Doctors are strictly advising patients to avoid over-the-counter steroid creams, which are common for treating rashes but actually act as fuel for TMVII, making the infection much more severe. “While the overall public health risk is low, state health officials say MSM, people who use anonymous apps, and people with a history of sexually transmitted infections may be at higher risk,” according to infectious disease researchers.

To stop the spread within the community, experts recommend total transparency with partners and immediate isolation of any new rashes. If you or a partner notice a new skin irritation, sexual contact should be avoided until it is cleared by a professional. Fungal spores are resilient, so sharing towels, clothing, or razors is highly discouraged.

For those already dealing with a rash, keeping it covered with bandages and washing hands immediately after touching the area can prevent the fungus from spreading to other parts of the body. Washing bedding and clothes on high heat remains the most effective way to kill lingering spores in the home.