characteristic of inheres in quality infectious disease incidence proportion Albert Goldfain A quality that inheres in an organism population and is the proportion of members of the population not experiencing an infectious disease course at the beginning of a specified period of time and in whom the infectious disease begins during the specified period of time. Alexander Diehl An instance of infectious disease incidence proportion is measured by dividing a measure of an instance of infectious disease incidence by the number of members of the population in which the infectious disease course had not begun at the beginning of the specified period of time over which the incidence was measured. Lindsay Cowell cumulative incidence of infectious disease organism population