Measles

**Definition:** A highly contagious infectious disease caused by MORBILLIVIRUS, common among children but also seen in the nonimmune of any age, in which the virus enters the respiratory tract via droplet nuclei and multiplies in the epithelial cells, spreading throughout the MONONUCLEAR PHAGOCYTE SYSTEM.

**Tree numbers:** - C01.925.782.580.600.500.500

**Synonyms:** - Rubeola