Community and Public Health Nursing
Core concepts
Community health nursing focuses on populations rather than individuals. Know the levels of prevention (primary: prevent disease; secondary: screening and early detection; tertiary: rehabilitation and limiting disability), epidemiology terms (incidence vs prevalence, attack rate, mortality, risk factors), the chain of infection and herd immunity, reportable diseases, and the nurse's role in outbreak investigation, health education, and policy. Understand vulnerable populations, cultural competence, and the social determinants of health.
Traps candidates fall for
- Confusing incidence (new cases over a period) with prevalence (all existing cases at a point in time).
- Misclassifying prevention levels: immunization and education are primary; mammography and TB screening are secondary; cardiac rehab is tertiary.
- Forgetting that community assessment precedes planning; a community diagnosis requires data.
- Overlooking that reporting certain communicable diseases to public health authorities is a legal duty.
- Assuming individual-level interventions solve population problems; think upstream.
Rule of thumb
Ask who is the client? If the answer is a population or community, choose the answer that changes the environment, policy, or access, not just one person's behavior.
Worked example
A community has a rising number of new tuberculosis cases. Options: treat each new patient, start a community-wide screening and education program, provide rehabilitation, or counsel one family. The priority is secondary prevention through screening plus primary prevention through education and case finding, because the client is the community, not a single patient.