Epidemiology focuses on understanding:
* How diseases spread: This includes identifying the source of infection, the mode of transmission, and the factors that influence disease spread.
* Who is at risk: Epidemiologists analyze factors like age, sex, ethnicity, lifestyle, and socioeconomic status to determine who is most vulnerable to specific diseases.
* Where diseases occur: This includes geographical distribution, environmental factors, and population density.
* Why diseases occur: Epidemiologists investigate the causes of disease, including genetic factors, environmental exposures, and lifestyle choices.
This knowledge helps develop strategies for disease prevention and control, as well as for the development of effective treatments.