The purpose and use of case investigation are

Investigate the cause, verify the diagnosis and give nursing guidance. The purposes and uses of case investigation are very diverse. The purpose is to deeply understand the situation of a single case and provide basis for further prevention and control measures. First of all, by investigating the causes of the disease, we can deeply understand the transmission routes and influencing factors of the disease and provide scientific basis for prevention and control measures. Secondly, verifying the diagnosis and giving nursing guidance will help to ensure the correct diagnosis and treatment of cases and provide personalized nursing advice for patients. In addition, taking preventive measures can reduce the incidence of cases, protect susceptible people and curb the further spread of diseases. Grasping the epidemic situation is one of the important purposes of case investigation. Through in-depth understanding of cases, we can provide first-hand information for disease surveillance, find abnormal situations in time, and warn of potential epidemics and epidemics. Finally, case investigation can also be used as an integral part of epidemic investigation to support the control and prevention of large-scale epidemic. Therefore, case investigation plays an irreplaceable role in the field of public health and is one of the important means to protect public health.