What is mean by communicable disease epidemiology?

Communicable Disease Epidemiology is the study of the distribution and patterns of communicable diseases in populations. It investigates how diseases are spread, who is affected, and how the spread of the diseases can be controlled. Communicable diseases are infections that can be transmitted person to person or through the environment, such as COVID-19, cholera, malaria, measles and tuberculosis.

Epidemiologists use various methods to study communicable diseases. They collect and analyze data about disease incidence, prevalence and distribution, identify sources of infection, track transmission patterns and develop strategies to prevent and control the spread of diseases. Their findings are used to make informed decisions about public health policies and programs related to communicable diseases.