Bryan JT Source Vaccine and Biologics Research, Merck Research Laboratories, Merck & Co., Inc., West Point, PA, United States. janine_bryan@merck.com Abstract The challenges of the journey from target identification through development of a prophylactic quadrivalent human papillomavirus (HPV) vaccine have been met in Gardasil. Cervical cancer is the second leading cause of cancer-related death in […]