The number of new cases of a disease in a population over a specific period of time compared with the healthy population is the

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The incidence rate is the number of new cases of a particular disease in a population over a specific period of time. It is often expressed as a rate per 1,000 or 100,000 people. The morbidity rate is the number of cases of a disease in a specified time frame, regardless of when they first occurred. The mortality rate is the number of deaths from a particular disease in a population over a specific period of time. The prevalence rate is the total number of cases of a particular disease in a population at a specific point in time. The epidemic rate is the rate at which a disease affects a larger than expected number of individuals within a population or geographical region.

The Number of New Cases of a Disease in a Population