Public health nursing promotes and protects the health of population using knowledge from nursing, social, and public health sciences. The most important focus of public health nursing is to market health and stop disease for entire population groups. It includes the identification of people who are in need for care but who have health problems that put themselves within the community in danger, such as those with infectious diseases.
Public health nursing follows a systematic process by which the health care requirements of a population are assessed in order to identify families and individuals who would benefit from health promotion or who are at risk of illness, injury, disability or early death.
This includes supporting and providing care to individual members of the population.