Which one of the following is a good index of the severity of an acute disease? (AIIMS May 09)
|A||Cause specific death rate|
|B||Case fatality rate|
|C||Standardized mortality ratio|
|D||Five year survival|
Case fatality rate is the killing power of a disease and is simply the ratio of deaths to cases. It is typically used in acute infections diseases and is closely related to the virulence.