Final answer:
Epidemiology is the field that studies the rate of disease, death, and healthcare service usage, understanding the patterns and impacts of health issues in populations. It involves analyzing morbidity and mortality rates to maintain public health and deal with endemic, epidemic, and pandemic diseases.
Step-by-step explanation:
The study that involves the rate of disease, rate of death, and use of healthcare services is known as Epidemiology. Epidemiologists investigate these factors to understand disease patterns and health issues in populations. They explore how many infectious pathogens are found in an infected person, the count of individuals killed by an infectious disease each year, the rate at which an infectious disease spreads, and the overall impact of a disease on the population, which includes both the number of deaths and the associated financial impact.
Morbidities, or the rate of illnesses due to a disease, and mortality rates, which reflect the number of deaths due to a particular disease within a population over a specified period, are crucial measurements in epidemiology. The study of incidence and prevalence provides vital information about new and existing cases of a disease, offering insights into risk factors and the overall health burden on a population.
There are different patterns of disease occurrence, such as endemic, epidemic, and pandemic, which are studied in depth within the field of epidemiology to manage and control public health concerns effectively.