Health experts are warning of new and highly contagious fungal strains after an NYC man in his 30s developed a sexually transmitted form of ringworm — the first reported case in the US.

“Healthcare providers should be aware that Trichophyton mentagrophytes type VII [TMVII] is the latest in a group of severe skin infections to have now reached the United States,” said Dr. Avrom S. Caplan, an assistant professor in NYU Grossman School of Medicine’s dermatology department.

Caplan co-authored a case study published Wednesday about an unidentified New Yorker who became infected with TMVII, with a rash appearing on his penis, buttocks and limbs. Cases of TMVII have been on the rise in Europe, especially in men who…