[Verified Answer]: A 23-year old sexually active male reported…

A 23-year old sexually active male reported to his physician that he had recently noticed a urethral irritation with slight burning after urination and ejaculation. A culture for Neisseria gonorrhea and Gram stain from the penis were performed and resulted in negative results. What would be the next most important pathogen that the physician might suspect? What is another important instruction that the physician should give the patient?