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  • Denis Pepin

A Ringworm Surprise: The Emergence of a Sexually Transmitted Fungal Infection in the US

The Emergence of a Sexually Transmitted Fungal Infection in the US.
Doctors have announced the first recognized instance of an infection in the U.S., a condition that was previously noted in Europe and Asia. (CyberNesco)

The world of sexually transmitted infections (STIs) is constantly evolving. While bacteria and viruses typically dominate the conversation, a recent case in the United States has thrown a spotlight on a rare fungal culprit: Trichophyton mentagrophytes type VII (TMVII). This specific strain of fungus, responsible for a highly contagious form of ringworm, has raised concerns due to its ability to spread through sexual contact.


TMVII, a fungus previously documented in Southeast Asia and Europe, made its first unexpected appearance in the United States, as reported in a paper published in JAMA Dermatology on Wednesday, June 5. This unique case was encountered by doctors in New York City.



The patient, a man in his 30s, presented with scaly, red patches around his groin, genitals, and buttocks. The unwelcome rash extended further, covering his legs, arms, and even his back. Interestingly, these symptoms emerged shortly after he returned from a trip spanning England, Greece, and California.


TMVII falls under the umbrella of ringworm, a fungal infection more commonly associated with the scalp or beard. However, this specific type thrives in warm, moist areas of the body, making the genital region particularly susceptible. The telltale signs include itchy, red, and sometimes scaly patches that can appear anywhere from a few days to a couple of weeks after exposure.


The biggest concern surrounding TMVII is its contagious nature. Unlike traditional ringworm which primarily spreads through contact with infected individuals or contaminated objects, TMVII can be transmitted through sexual activity. This raises a red flag, particularly since the case in New York suggests potential community spread, with the patient having traveled to various locations.



Fortunately, diagnosis and treatment are available. Doctors can typically diagnose TMVII through a simple skin scraping or a fungal culture. Once confirmed, antifungal medications become the primary weapon against the infection. Terbinafine appears to be particularly effective in combating TMVII, although the healing process can be lengthy. Studies suggest it can take months for the infection to clear completely, even with dedicated treatment.


The New York case highlights the importance of vigilance in the face of emerging STIs. Here's what you need to know:


  • Be aware of the symptoms: Keep an eye out for itchy, red, and scaly patches around the groin, genitals, buttocks, or anywhere on the body.


  • Seek medical attention promptly: Early diagnosis and treatment are crucial for preventing further spread and ensuring a faster recovery.


  • Practice safe sex: While condoms can help reduce the risk of transmission, open communication with sexual partners and practicing safe hygiene are essential.


  • Inform sexual partners: If diagnosed with TMVII, it's vital to inform your sexual partners so they can be evaluated and receive proper treatment if necessary.



The emergence of TMVII serves as a reminder that sexual health requires a multifaceted approach. While regular STI testing is crucial, being aware of new threats like TMVII empowers individuals to take proactive steps towards their well-being.


Beyond the individual level, the case in New York underscores the need for continued research and surveillance of STIs. Healthcare professionals must stay updated on evolving trends and remain vigilant in identifying and treating new threats. Additionally, public health initiatives play a vital role in raising awareness about emerging STIs and promoting safe sexual practices.


While the long-term implications of TMVII in the US remain to be seen, the initial case serves as a wake-up call. By understanding the signs and symptoms, practicing safe sex, and seeking prompt medical attention, individuals can play a significant role in preventing the spread of this novel STI.


Additional Considerations:


  • Impact on specific populations: While the reported case involved a male patient, further research is needed to understand how TMVII might affect different demographics.


  • Drug resistance: Although terbinafine seems effective for now, continued monitoring is crucial to identify any potential drug resistance that might emerge in the future.


  • Global perspective: The case in New York highlights the interconnectedness of the world in terms of infectious disease spread. International collaboration is vital for tracking and managing emerging STIs.


By staying informed and practicing responsible sexual health behaviors, we can collectively address the challenges posed by STIs like TMVII and safeguard our overall well-being.



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