Final answer:
Morbidity and mortality rates are important measurements of disease occurrence and distribution. Morbidity refers to the number of people with an illness, while mortality refers to the number of deaths due to a disease.
Step-by-step explanation:
Two important measurements of disease occurrence and distribution are morbidity (illnesses due to a disease) and mortality (deaths due to a disease). The morbidity of a specific disease is defined as the number of susceptible people in a population that have the disease during a specific period of time, and is usually expressed as a rate. Mortality may also be expressed as a rate, and reflects the number of deaths due to a particular disease in a population over time.