Health authorities in Minnesota are alerting residents and medical providers about an emerging outbreak of a highly contagious fungal skin infection caused by Trichophyton mentagrophytes genotype VII (TMVII). The strain is part of the same fungal family responsible for common conditions such as ringworm, jock itch, and athlete’s foot, but officials say this particular genotype has demonstrated unusual patterns of transmission and severity.
According to the Minnesota Department of Health (MDH), the first confirmed case of TMVII in the state was identified in July 2025. Since that time, 13 additional cases have been confirmed, with 27 more suspected infections under investigation. The outbreak follows earlier reports of TMVII cases in other parts of the country, including New York in 2024. The Centers for Disease Control and Prevention (CDC) has also confirmed infections in multiple U.S. cities.
Medical experts explain that TMVII typically presents as round, red, inflamed rashes that may spread across various parts of the body. The lesions are often itchy, painful, and sometimes rough in texture, making them easy to confuse with eczema or other skin disorders. While traditional fungal infections often respond quickly to over-the-counter antifungal creams, doctors are reporting that TMVII infections frequently require prescription-strength oral antifungal medications taken for several weeks to fully resolve.
Health officials state that TMVII spreads primarily through direct skin-to-skin contact, including sexual contact. It may also be transmitted through contaminated objects and surfaces, such as shared towels, bedding, gym equipment, or communal bathing areas. Experts note that certain populations may be at higher risk, including individuals with a history of sexually transmitted infections or those with weakened immune systems. In immunocompromised individuals, the infection may become more widespread and severe if not treated promptly.
In response to the outbreak, MDH has implemented enhanced surveillance measures to track and identify additional cases. Healthcare providers are being urged to report suspected infections and conduct appropriate laboratory testing when necessary. Diagnosis is often based on the appearance of the rash and its failure to improve with standard antifungal treatments, though confirmation may require laboratory analysis of a skin scraping.
Public health officials recommend preventive measures such as avoiding close skin contact with infected individuals, refraining from sharing personal items like towels and clothing, washing linens in hot water, and sanitizing shared surfaces. Anyone experiencing persistent or unusual fungal skin symptoms is advised to seek medical evaluation immediately.
As the Minnesota fungal outbreak continues to be monitored, health officials emphasize that early detection, proper treatment, and preventive hygiene practices are key to limiting the spread of TMVII infections.
