Final answer:
Morbidity in a population, expressed as incidence and prevalence, measures new and existing cases of a disease, respectively. The mortality rate indicates the number of deaths due to a disease and like morbidity, can be expressed per a standard population number or as a percentage.
Step-by-step explanation:
Morbidity refers to the presence of illness or disease within a population and can be quantified in two ways: incidence and prevalence. Incidence measures the number of new cases of a disease occurring in a specified time period, which helps in understanding risk factors and disease spread. Prevalence accounts for both new and existing cases at a particular point in time, reflecting the overall health burden of a disease on a population.
The morbidity rate can be expressed per a certain number of people in a population (often per 100,000) or as a percentage. Similarly, mortality rate provides insight into the severity and impact of a disease by indicating the number of deaths it causes within a population, also expressed per a standard number of individuals or as a percentage.