Prevalence

**Definition:** The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.

**Tree numbers:** - E05.318.308.985.525.750 - N01.224.935.597.750 - N06.850.505.400.975.525.750 - N06.850.520.308.985.525.750