Trichomoniasis (trich) is a sexually transmitted infection (STI). It is very common. Trich is easily treatable and is caused by a one celled protozoan organism called Trichomonas vaginalis. It travels from person to Scarlet SEX ED SUNDAY: Trichomoniasis Trichomoniasis (commonly known as 'trike' or 'trich') is an STI caused by a parasite that can cause inflammation and infection of the urethra, vagina, and cervix Trichomonas infection, also known as trichomoniasis, is a sexually transmitted infection (STI) caused by the protozoan parasite Trichomonas vaginalis. It is one of the most common curable STIs and primarily affects the Safe Pleasure: Understanding STI Risks with Sex Toys and the Importance of STD Testing in Southington, CT How to clean sex toys, according to experts Mashable