Measles (Rubeola; Morbilli; 9-Day Measles) By Brenda L Tesini, MD, University of Rochester School of Medicine and Dentistry Reviewed / Revised May 2023 View Patient Education Pathophysiology Symptoms and Signs Diagnosis Treatment Prognosis Prevention Key Points More Information Topic Resources Measles (Koplik Spots) Measles (Macular Rash) Measles is a highly contagious viral infection that is most common among children.