<prompt> The following is true about prevalence and incidence -Both are ratesPrevalence is a rate but incidence is notIncidence is a rate but prevalence is notBoth are not rates  <response>: IncidenceIncidence No of new cases during a given time period Population at risk during that period x 100Numerator new cases is a part of denominator population at risk including those who have developed disease, i.e. the cases.Time period is specifiedMultiplier is 1000All are features of rate, so incidence is a rate.Prevalence Prevalence is proportion. 