What is public health? An explanation of public health?

1 refers to technologies and sciences that organize public efforts to protect and improve public health, including preventive medicine, environmental sanitation and social sciences. People should keep a clean and hygienic living and working environment.

2. Public health is related to the public health of a country or region. The specific contents of public health include the prevention, monitoring and treatment of major diseases, especially infectious diseases (such as tuberculosis, AIDS and SARS). ); Supervise and control food, medicine and public health, as well as related health promotion, health education and immunization.