To better understand mumps, it helps to understand the anatomy of the parotid gland.
Parotitis affects the parotid glands, which are located in front of the ears. The parotid glands produce saliva that contains an enzyme to help break down food.
- Atkins GJ, Cosby SL. Is an improved measles-mumps-rubella vaccine necessary or feasible? Crit Rev Immunol. 2003;23(4):323-38. 
- Galazka AM, Robertson SE, Kraigher A. Mumps and mumps vaccine: a global review. Bull World Health Organ. 1999;77(1):3-14. 
- Pugh RN, Akinosi B, Pooransingh S, Kumar J, Grant S, Livesley E, Linnane J, Ramaiah S. An outbreak of mumps in the metropolitan area of Walsall, UK. Int J Infect Dis. 2002 Dec;6(4):283-7. 
- Wilson K, Mills E, Ross C, McGowan J, Jadad A. Association of autistic spectrum disorder and the measles, mumps, and rubella vaccine: a systematic review of current epidemiological evidence. Arch Pediatr Adolesc Med. 2003 Jul;157(7):628-34.