Definition: The number of new cases of a disease in a population within a specific time interval, usually a year
By Elizabeth Boskey, Ph.D., About.com Guide
Updated April 13, 2007
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Elizabeth Boskey, Ph.D.
Sexually Transmitted Diseases (STDs) Guide
©2013 About.com. All rights reserved.