Incidence

**Definition:** The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases in the population at a given time.

**Tree numbers:** - E05.318.308.985.525.375 - N01.224.935.597.500 - N06.850.505.400.975.525.375 - N06.850.520.308.985.525.375