Endemic means a disease occurs frequently and at a predictable rate in a specific location or population. For example, chicken pox occurs at a high and predictable rate among American school children.
Update Date 1/15/2013
Updated by: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.