Which protozan can affect the urinary tract in males?

The protozoan that can affect the urinary tract in males is *Trichomonas vaginalis*. This sexually transmitted infection (STI) is caused by a single-celled parasite and can cause inflammation and irritation in the urethra, the tube that carries urine out of the body. Symptoms of *T. vaginalis* infection in males can include pain or burning sensation during urination, discharge from the penis, and itching or irritation around the tip of the penis. Treatment typically involves antibiotics to eliminate the infection.