Stemmer SM, et al. - In a commercial laboratory setting, an age- and state-based comparison of the detection rates of Trichomonas vaginalis infection and Chlamydia trachomatis was carried out. The findings revealed no decline in the detection rate of T. vaginalis with age as observed for C. trachomatis. The detection rate of T. vaginalis reached maximum rates in women ages 48-51 years old. The geographic distribution of T. vaginalis was similar to that of other sexually-transmitted infections. Additionally, no specific association of the ntr6_TVK80STOP polymorphism with age or geography was evident.