Intravenous antibiotic therapy related to osteomyelitis

A man is admitted to the hospital for intravenous antibiotic therapy related to osteomyelitis. The nurse begins the admission process by taking a detailed history. The nurse asks the patient about his current symptoms and complaints, previous infections, and response to antibiotic therapy. When the nurse asks the patient about any history of sexually transmitted infections, the patient responds, “That’s none of your business.” How should the nurse respond? Why is it important to obtain a history regarding sexually transmitted infections?