1. In China, the definition of epidemiology mainly includes the following aspects: studying the disease and health status of the population: epidemiology can understand the disease and health status of different populations by collecting and analyzing a large number of data, including morbidity, mortality and prevalence. Study the distribution and epidemic law of diseases: Epidemiology studies the geographical distribution and time distribution of diseases.
2. Study on the influencing factors of diseases: Epidemiological analysis of various possible influencing factors, such as environmental factors, genetic factors, behavioral factors, etc., to explore their relationship with the occurrence and development of diseases, and to provide guidance for the prevention and control of diseases. Study on disease prevention and control strategies: Epidemiology puts forward scientific and reasonable measures by evaluating the effects of different prevention and control strategies.
The importance of epidemiology is as follows:
1. First of all, epidemiology is an important means to prevent and control diseases. Through epidemiological research, we can understand the occurrence, development and spread of diseases, so as to formulate effective prevention and control strategies. For example, through epidemiological research, we can find high-risk areas and high-risk groups of certain diseases, so as to carry out targeted prevention and control.
2. Secondly, epidemiology is an important tool to evaluate the effectiveness of public health policies and interventions. Through epidemiological research, we can evaluate the effects of various public health policies and interventions, thus providing scientific basis for decision makers. For example, through epidemiological research, we can evaluate the effect of vaccination and decide whether it is necessary to promote vaccination.
Thirdly, epidemiology is an important method to study the health status and disease burden of the population. Through epidemiological research, we can understand the health status and disease burden of the population, thus providing a basis for formulating health policies and resource allocation. For example, through epidemiological research, we can understand the disease burden of a certain disease.