<prompt> Find out prevalence in a population of 5000, 500 are suffering from a disease. There are 150 old cases of disease in the population9121318  <response>: The term disease prevalence refers specifically to all current cases old and new existing at a given point in time, or over a period of time in a given population. A broader definition of prevalence is as follows: the total number of all individuals who have an attribute or disease at a paicular time or during a paicular period divided by the population at risk of having the attribute or disease at this point in time or midway through the period . No. of old and new cases 650 Total population at that point of time 5000 Prevalence 6505000 x 100 0.13 x 100 13 