Epidemiology (noun)

1. The branch of medicine concerned with the study of the causes, distribution, and control of diseases that affect populations.
2. The study of the spread and control of diseases in populations, especially the incidence, distribution, and control of diseases in human populations.

Origin:

Late 19th century: from greek epidēmia "prevalence of disease" + -logy.

Examples:

1. Epidemiology is the study of how diseases spread and how they can be controlled.
2. The epidemiology of the disease was analyzed to determine its cause and possible cures.
3. Epidemiology is a crucial component of public health and disease control.
4. The epidemiology of the outbreak was studied to determine the origin and spread of the disease.
5. Epidemiology is a key factor in the design of effective public health strategies.