Trichomonas vaginalis is an anaerobic, flagellated, parasitic protozoan and the causative agent of Trichomoniasis. Trichomoniasis is a sexually transmitted disease. The symptoms of Trichomoniasis include itching in the genital area, vaginal discharge, burning with urination, and pain during sex. On the other hand, Leishmaniasis is a disease caused by protozoan parasites Leishmania species, i.e. Leishmania donovani (Visceral leishmaniasis or kala-azar) and it is spread by sandflies.