Final answer:
Epidemiology is the field that focuses on studying the patterns, causes, and effects of diseases in human populations. It involves collecting data about diseases, tracking their spread, and developing strategies to prevent and control them.
Step-by-step explanation:
Epidemiology is a field of study that focuses on the patterns, causes, and effects of diseases in human populations. It involves studying the occurrence, distribution, and determinants of health and disease in order to identify risk factors and develop strategies for prevention and control. Epidemiologists collect data about diseases, track their spread, and work on developing public health policies to reduce the incidence of diseases and improve the overall health of the population.