The main purpose of immigration epidemiology is to

The main purpose of immigration epidemiology is to distinguish the role of genetic factors or environmental factors in the etiology of diseases. According to the relevant public information, immigration epidemiology is a branch of epidemiology and other disciplines, which studies the incidence or mortality of a certain disease when people with certain characteristics migrate from one country to another with different environments (or from one area of China to another), so as to explore its causes or epidemic factors. The main purpose of his theory is to distinguish the role of genetic factors or environmental factors in the etiology of diseases.