(metronidazole, tinidazole, secnidazole). Sexual partners should also be treated. About 20% of people get infected again within three months of treatment.

There were about 122 million new cases of trichomoniasis in 2015. In the United States, about 2 million women are affected. It occurs more often in women than men. Trichomonas vaginalis was first identified in 1836 by Alfred Donné.