Minnesota health officials have issued a warning about a rising outbreak of a contagious fungal skin infection linked to a specific strain known as Trichophyton mentagrophytes genotype VII. This strain is associated with ringworm and presents with round, red rashes that can cause significant discomfort and itching.
The Minnesota Department of Health confirmed that the first case of this particular fungus was reported in July 2025. Since that time, the number of confirmed infections has risen to 14, with an additional 27 suspected cases reported across the state. A similar infection was first identified in New York in 2024, with the Centers for Disease Control and Prevention verifying instances in various U.S. cities.
Health experts indicate that the infection commonly spreads through direct skin-to-skin contact, notably during intimate encounters. Additionally, fungal spores can linger on contaminated surfaces, such as towels shared in gyms or communal bathing areas. Dr. Todd Wills, an internal medicine specialist at the University of South Florida Morsani College of Medicine, emphasized that this strain is unique as it is the only identified sexually transmitted fungal infection.
Individuals most at risk for developing this infection include men who have sex with men and commercial sex workers, although anyone in contact with an infected person could potentially contract the fungus. Those with a history of sexually transmitted infections may also be more vulnerable.
Diagnosis typically relies on the visible signs of the infection, especially when conventional antifungal treatments do not alleviate the rash. In some cases, healthcare providers may require a skin scraping biopsy to confirm the diagnosis. Antifungal pills are often necessary for effective treatment, as topical creams may be insufficient for severe cases.
As the outbreak continues, specialists stress the importance of taking preventive measures. Avoiding close skin contact and not sharing personal items such as towels and linens is crucial. Dr. Hayden Andrews, an infectious disease expert, noted that those exhibiting symptoms should seek medical attention promptly and that healthcare professionals should report suspected cases for further investigation.
In the context of this outbreak, the public is urged to maintain high levels of hygiene, including washing all household linens and towels on a hot cycle and sanitizing shared bathing areas. Untreated infections can lead to worsening symptoms, including potential scarring and more severe complications, particularly in individuals with weakened immune systems.
Local health officials remain vigilant as they monitor developments and encourage anyone with symptoms to reach out for immediate medical care.