术语信息
comment
A particular instance of infection incidence will depend on a type of infectious agent, a population, and a period of time. Incidence is used as a measure of risk. Actual measures of incidence are based only on reported cases and usually specify a time interval and geographic location. Other constraints may include population demographics. These constraints will vary with the context of the incidence measure.
definition
A quality that inheres in an organism population and is the number of organisms in the population that become infected with an infectious agent during a specified period of time.