When Was Trichomoniasis First Diagnosed?

It is unclear when the first case of trichomoniasis was reported, though the infection is caused by the protozoa trichomonas vaginalis, first discovered in the 1830s, reports the Journal of Clinical Cytology and Cytopathology. Up to 20 percent of women develop trichomoniasis at some point, states Everyday Health.

While "trich" is perhaps the most common curable sexually transmitted disease worldwide, is not a reportable infection and receives little attention from public health STD programs, explains the U.S. National Library of Medicine. Additionally, only about half the people infected with the virus show symptoms, which include discharge, itchiness and pain, and among those that do, many do not notice them, explains Everyday Health.