# Public Health Emergency Preparedness Competencies

## Overview

Public health emergency preparedness (PHEP) encompasses the capabilities needed to prevent, detect, respond to, and recover from health threats. The Incident Command System (ICS) and National Incident Management System (NIMS) provide standardized organizational frameworks for emergency response. CDC's Public Health Emergency Preparedness and Response (PHPR) capabilities define 15 core areas for state and local health departments. Crisis and Emergency Risk Communication (CERC) principles guide public messaging during emergencies. Chronic underfunding of public health infrastructure limits preparedness capacity, as exposed by COVID-19. Preventive medicine physicians serve in leadership roles across public health agencies, health systems, and military during emergencies.

## Incident Command System (ICS)

### Structure

Standardized management system for emergency response operations. Developed after 1970 California wildfires; adopted nationally under NIMS (2004) Five functional areas: **Command**: incident commander sets objectives, manages overall response. **Operations**: executes tactical operations (surveillance, mass vaccination, sheltering) **Planning**: collects/analyzes information, develops action plans, tracks resources. **Logistics**: provides resources, supplies, facilities, transportation, communications. **Finance/Administration**: tracks costs, procurement, time, compensation/claims. Unity of command: each person reports to one supervisor. Span of control: 3-7 subordinates per supervisor (optimal = 5) Modular and scalable: expands or contracts based on incident size. Common terminology: standardized language across disciplines and jurisdictions.

| ICS Section | Function | Public Health Example |
|---|---|---|
| Command | Sets objectives, manages overall response | Incident Commander (Health Officer) |
| Operations | Executes tactical operations | Mass vaccination, surveillance, shelter operations |
| Planning | Collects/analyzes information, develops action plans | Epidemiologic analysis, resource tracking |
| Logistics | Provides resources, supplies, facilities | SNS deployment, transportation, communications |
| Finance/Administration | Tracks costs, procurement, time | Emergency funding, mutual aid agreements |

### Public Health Adaptations

Public Health Incident Command: health department-specific ICS activation. Medical Operations Center (MOC): health system emergency operations. Integration with hospital incident command (HICS) and community emergency operations centers (EOCs) Joint Information Center (JIC): coordinates public messaging across agencies.

## CDC Public Health Emergency Preparedness Capabilities

### 15 Capabilities (Selected Key Ones)

**Community preparedness**: engaging communities in planning, building resilience. **Community recovery**: restoring health and social services post-event. **Emergency operations coordination**: ICS activation, multi-agency coordination. **Emergency public information and warning**: timely, accurate public communication. **Fatality management**: mass fatality operations, victim identification. **Mass care**: sheltering, feeding, distributing essential supplies. **Medical countermeasure dispensing and administration**: mass vaccination/prophylaxis (Points of Dispensing -- PODs) **Medical materiel management and distribution**: Strategic National Stockpile deployment. **Medical surge**: expanding healthcare capacity during emergencies. **Public health laboratory testing**: specimen collection, surge testing capacity. **Public health surveillance and epidemiological investigation**: emergency disease surveillance. **Responder safety and health**: protecting emergency workers. **Information sharing**: interoperable communication systems. **Volunteer management**: Medical Reserve Corps, ESAR-VHP credentialing. **Non-pharmaceutical interventions**: social distancing, quarantine, isolation, school closures.

## Strategic National Stockpile (SNS)

Federal repository of medical countermeasures maintained by ASPR (Administration for Strategic Preparedness and Response) Contents: antibiotics, antitoxins, antivirals, vaccines, ventilators, PPE, burn supplies. Deployment: can deliver assets to any state within 12 hours of federal decision. CHEMPACK: pre-positioned nerve agent antidote caches in communities nationwide. COVID-19 exposed limitations: insufficient ventilator and PPE reserves; supply chain vulnerabilities. Post-pandemic reforms: diversifying supply chains, increasing domestic manufacturing capacity.

## Crisis and Emergency Risk Communication (CERC)

### CERC Principles

**Be first**: communicate early, even with incomplete information, to establish credibility. **Be right**: accuracy builds trust; correct errors immediately. **Be credible**: use transparent, honest communication; acknowledge uncertainty. **Express empathy**: recognize fear, suffering, and loss. **Promote action**: give people specific, actionable steps. **Show respect**: treat all audiences with dignity; cultural competence in messaging.

### Communication Phases

**Pre-crisis**: risk communication, preparedness messaging, building trust. **Initial event**: rapid notification, safety information, what is known and unknown. **Maintenance**: ongoing updates, countering rumors and misinformation, addressing emerging issues. **Resolution**: updates on recovery, lessons learned, recognition. **Evaluation**: assessing communication effectiveness, after-action review.

### Challenges in Modern CERC

Social media amplifies misinformation faster than official channels can respond. Politicization of public health messaging erodes trust. Infodemic: overabundance of information (accurate and inaccurate) during emergencies. Health literacy: messaging must be accessible to diverse audiences (reading level, language, cultural context) Community health workers and trusted local leaders as communication force multipliers.

## Community Health Assessment During Disasters

### Rapid Needs Assessment

Community Assessment for Public Health Emergency Response (CASPER): CDC tool for rapid, household-based assessment. Uses two-stage cluster sampling for population-representative data collection in 48-72 hours. Assesses: health status, access to healthcare, medication needs, mental health, functional needs, utility status. Informs resource allocation and operational decisions.

### Vulnerable Populations (Access and Functional Needs)

Children, elderly, pregnant women, persons with disabilities, non-English speakers, homeless, incarcerated, medically fragile. AT-RISK framework: individuals requiring additional support during emergencies. Functional needs categories: communication, medical care, independence maintenance, supervision, transportation (C-MIST) Planning must address these populations proactively, not reactively.

## Medical Reserve Corps and Volunteer Management

Medical Reserve Corps (MRC): national network of ~200,000 volunteers (clinicians and non-clinicians) organized locally. ESAR-VHP (Emergency System for Advance Registration of Volunteer Health Professionals): state-based credentialing systems. Liability protection: volunteers activated under state emergency declarations typically covered by Good Samaritan laws and/or PREP Act. COVID-19: demonstrated massive volunteer mobilization (vaccination campaigns, testing sites, contact tracing)

<image>A diagram of the Incident Command System organizational structure showing the five functional areas (Command, Operations, Planning, Logistics, Finance/Administration) arranged under the Incident Commander, with a Public Information Officer, Safety Officer, and Liaison Officer in the Command Staff. Expanded sections show public health-specific roles under Operations (surveillance, epidemiology, mass vaccination) and Logistics (medical supply, SNS coordination). ICS structure education illustration.</image>

<image>A circular infographic showing the CERC communication phases: Pre-Crisis, Initial Event, Maintenance, Resolution, and Evaluation. Each phase includes the key communication objectives, audience needs, and recommended messaging strategies. Examples from COVID-19 are annotated at each phase (e.g., pre-crisis: pandemic preparedness messaging; initial event: stay-at-home orders; maintenance: vaccine confidence campaigns). CERC education illustration.</image>

<image>A U.S. map showing the Strategic National Stockpile distribution network, with icons indicating SNS warehouses, CHEMPACK pre-positioned caches, and state/local receiving and distribution points. An inset timeline shows the 12-hour deployment window from federal decision to state delivery, with key steps (request, authorization, mobilization, transport, distribution to Points of Dispensing). SNS preparedness education illustration.</image>

## Clinical Pearls

Span of control (3-7 subordinates per supervisor, optimal 5) is one of the most tested ICS concepts -- it applies to both emergency and day-to-day public health management. CASPER (rapid community assessment) can be deployed in 48-72 hours and provides population-representative data for emergency resource allocation -- know this tool for field epidemiology and disaster response. "Be first, be right, be credible" -- these CERC principles remain the gold standard for emergency communication despite the challenge of social media misinformation. The Strategic National Stockpile can deliver medical countermeasures within 12 hours, but COVID-19 revealed that stockpile adequacy depends on political will for sustained pre-event investment. For boards: know ICS structure and terminology, the five CERC principles, CASPER methodology, and the role of the SNS and Points of Dispensing in mass prophylaxis.

## References

- CDC. Public Health Emergency Preparedness and Response Capabilities. CDC; 2019.
- FEMA. National Incident Management System (NIMS). 3rd ed. FEMA; 2017.
- Reynolds B, Seeger MW. Crisis and emergency risk communication as an integrative model. J Health Commun. 2005;10(1):43-55.
- Schnall AH, et al. Community Assessment for Public Health Emergency Response (CASPER): an innovative approach to needs assessment. Am J Public Health. 2017;107(S2):S186-S192.
- ASPR. Strategic National Stockpile. phe.gov; 2024.