A quick, affordable diagnostic test developed by a Washington State University researcher may help curb one of the most prevalent but least discussed sexually transmitted infections. More common than chlamydia or gonorrhea, Trichomonas vaginalis, also known as trich, causes no symptoms in about 70% of those infected. Even when asymptomatic, trich is linked to a host of bad health outcomes, including increased susceptibility to HIV, prostate cancer in men and infertility and pregnancy complications in women. Trich is easily curable with a drug called metronidazole, if diagnosed, and WSU researcher John Alderete has been working for years to improve testing and make it more accessible. His latest development, detailed in the journal Pathogens, is a new finger-prick test that delivers results in five minutes and can be produced for under $20.