Public health nursing is a nursing specialty focused on public health. Public Health Nurses (PHN's) "integrate community involvement and knowledge about the entire population with personal, clinical understandings of the health and illness experiences of individuals and families within the population. Public Health Nurses put together plans that alleviate or eliminate health or safety issues in a community, issues like immunizations, STDs, and obesity. They monitor health trends and identify health risk factors unique to specific communities, Set local priorities for health-related interventions to provide the greatest benefit to the most people, Advocate with local, state and federal authorities to improve access to health services for underserved communities, Tell people about locally available health care programs and services to improve access to care, Educate and provide direct health care services to vulnerable and at-risk populations etc..