Which one of the following is true regarding case fatality rate?

Case fatality rate = No. of deaths due to disease / No. of infected people Case fatality rate (CFR) is the ratio of deaths within a designated population of "cases" (people with a medical condition), over the course of the disease. A CFR is conventionally expressed as a percentage. CFRs are most often used for diseases with discrete, limited time courses, such as outbreaks of acute infections.