Trichomoniasis is a sexually transmitted protozoal reproductive disease of cattle caused by Tritrichomonas foetus. There has been a re-emergence of the disease due to increased movement of breeding cattle. The disease is characterized by infertility and early embryonic death. Most producers do not recognize a problem until cattle are checked for pregnancy. Affected herds may experience 40- 60% late-bred and/or open cows. Bulls are asymptomatic carriers of the protozoa and infect the cow during breeding. Infected cows will experience fetal loss and then clear the infection and be able to sustain a subsequent pregnancy