<prompt> A drug which reduces moality but does not cure a disease will gradually lead toIncidence and prevalence both increaseIncidence and prevalence both decreaseIncidence increases while prevalence decreasesIncidence same, prevalence increases  <response>: Prevalence Incidence Duration of illnessIf the drug reduces moality but cannot cure the disease, duration of illness increases. So, prevalence increases.This drug has no influence on the cause, so incidence remains the same. 