<prompt> Which one of the following is a good index of the serverity of an acute diseaseCause specific death rateCase fatality rateStandardized moality ratioFive year survival  <response>: ref: Park;s 23rd edition pg 58 Case fatality rate measures the killing power of a disease, for acute infectious diseases like food poisoning, cholera, measles. it is simply the ratio it is not a RATE of deaths to cases. 