A concerning new health threat has been emerging in the US: drug-resistant Trichophyton indotineae. This fungus, which causes severe skin infections, has had 11 identified cases in New York City within the past year.
What is T. indotineae?
T. indotineae is a fungus that causes skin infections. Related to ringworm, T. indotineae causes characteristic red, scaly, circular rashes and intense itchiness. However, unlike other Trichophyton species, T. indotineae is resistant to standard anti-fungal treatments like terbinafine.
The drug-resistant fungus was first identified in South Asia but has rapidly spread across the globe, reaching countries like Germany, Canada, and now the United States.
According to a report published in JAMA Dermatology, “Despite increased US spread, cases are likely underrecognized due to lack of awareness.” Furthermore, T. indotineae can be mistaken for more common fungal infections, leading to delays in appropriate care.
Public health implications
Given T. indotineae’s drug resistance, alternative antifungal treatments like itraconazole could potentially work to clear up cases, but prolonged treatment durations are required for a full recovery.
The CDC urges healthcare providers who suspect T. indotineae infection to “contact their state or local public health department for assistance with testing.” They also emphasize the importance of accurate diagnosis and appropriate treatment to prevent the spread of this fungus.