A 19-year-old woman is evaluated in an emergency department after reporting being sexually assaulted by a man 7 hours prior. Her last menstrual period was 3 weeks prior. A review of his immunization records indicates he has previously received the complete immunization series for human papillomavirus (HPV) and hepatitis B virus (HBV). In the emergency room, a thorough evaluation is performed that includes a general physical examination and pelvic examination. Forensic evidence is collected and samples are obtained to test for sexually transmitted infections. A urine pregnancy test is negative.