IN A NUTSHELL Author's NoteThe article draws on Northern Côte d’Ivoire field experience to highlight the critical role of Community Health Workers (CHWs), through risk communication and community engagement (RCCE), during outbreaks and in epidemic preparedness in resource-limited settings. Three strategic priorities emerge from this experience: Institutionalize RCCE as a core pillar of health security, embedded in routine systems rather than activated only during crises Invest sustainably in CHWs, including training, supervision, fair remuneration, and formal recognition within national health systems Strengthen the community-health system interface, ensuring that trust, local knowledge, and social dynamics are leveraged as strategic assets
By Issa Barry, MD, MPH
Public Health & Humanitarian Action
When Community Health Workers Become the First Line of Epidemic Defense: Lessons from Measles Outbreaks in Northern Côte d’Ivoire
Epidemic preparedness starts in the community
In many rural settings across West Africa, epidemic preparedness does not begin in laboratories or national contingency plans. It begins in the community.
In Northern Côte d’Ivoire, during recent measles outbreaks, Community Health Workers (CHWs) have emerged as a critical interface between the health system and the population. Through risk communication and community engagement (RCCE), they bridge the gap between formal health structures and everyday realities, playing a decisive role in early detection, rapid response, and the rebuilding of trust in vaccination.
This experience reflects a broader consensus in global health that effective preparedness relies not only on technical capacity but also on strong community-based systems, as emphasized in global guidance such as the World Health Organization RCCE framework (https://www.who.int/publications/i/item/risk-communication-and-community-engagement-(rcce)-action-plan-guidance).
Delayed detection and fragile trust
Measles remains a highly contagious disease and a persistent public health threat in many low-resource settings, despite the availability of a safe and effective vaccine. According to the World Health Organization, outbreaks continue to occur primarily in areas with gaps in immunization coverage and weak surveillance systems (https://www.who.int/news-room/fact-sheets/detail/measles).
In rural contexts, structural and social barriers undermine timely outbreak response. Detection of suspected cases is often delayed due to geographic constraints and limited access to health facilities. At the same time, misinformation, rumors, and vaccine hesitancy continue to affect vaccination uptake.
Crucially, communities are too often positioned as passive recipients of interventions rather than active partners in surveillance and response. This disconnect weakens preparedness systems and allows outbreaks to spread before formal mechanisms are fully activated.
A community-anchored response
Within a community-based health program implemented in Northern Côte d’Ivoire, CHWs operate at the frontline of epidemic preparedness through an RCCE-centered approach. Working in close collaboration with primary health care facilities, they maintain continuous links with frontline health services, to which they refer suspected cases, thereby acting as a critical interface within the health system.
Their proximity to households enables a shift from passive to proactive surveillance. CHWs identify suspected measles cases directly within communities, on average within 24 hours of symptom onset, significantly reducing delays in detection and reporting.
They conduct regular home visits, combining surveillance with interpersonal communication. These interactions go beyond information delivery; they create space for dialogue, trust-building, and behavioral change.
Through these engagements, CHWs promote early recognition of symptoms, encourage timely care-seeking, address fears and misconceptions related to vaccination, and adapt public health messages to local socio-cultural contexts.
Embedded within their communities, CHWs also play a critical role in identifying and countering rumors. In practice, this has translated into more frequent identification of suspected cases at the household level and improved follow-up of children who had missed routine immunization.
Bridging data and action
An important dimension of this approach lies in the integration of digital tools into community-based work (community health toolkit-CHT). Equipped with tablets and continuously updated household registries, CHWs identify children who have missed vaccination doses and ensure targeted follow-up.
This approach aligns with broader global efforts to leverage digital health for strengthening health systems (https://www.who.int/health-topics/digital-health). By linking real-time data with community presence, surveillance, communication, and vaccination efforts become more coordinated and responsive.
From reaction to anticipation
This CHW-led, RCCE-driven model contributes to a shift in how epidemic preparedness is operationalized.
Earlier detection and reporting of suspected cases reduce delays in response and limit potential transmission chains. Vaccination uptake improves as trust is progressively rebuilt through sustained engagement. Adherence to public health recommendations increases, supported by continuous, culturally grounded communication.
Beyond these measurable outcomes, a more profound transformation takes place: communities become active participants in health security rather than passive beneficiaries.
In this sense, preparedness evolves from a reactive model, triggered once outbreaks escalate, towards a more anticipatory and community-informed approach.
Persistent challenges and structural limitations
Despite these advances, important challenges remain and must be addressed to sustain and scale such approaches.
Limited internet connectivity continues to constrain real-time reporting in remote areas. CHWs face increasing workloads as their responsibilities expand, often without commensurate support. Gaps in digital literacy can limit the effective use of technological tools.
More fundamentally, the often-informal status of CHWs raises concerns about sustainability, motivation, and long-term system integration. As highlighted in the World Health Organization guideline on optimizing community health worker programmes (https://www.who.int/publications/i/item/9789241550369), sustained investment in CHWs remains a critical gap in many health systems.
These constraints reflect a broader global challenge: while CHWs are increasingly recognized as essential to primary health care and even epidemic preparedness, investment in their support systems remains insufficient.
Rethinking epidemic preparedness
This experience calls for a re-examination of how epidemic preparedness is conceptualized in resource-limited settings.
Too often, preparedness is framed primarily in terms of technical capacities (laboratories, surveillance infrastructures, and emergency response teams) while underestimating the foundational role of community-based systems.
CHWs should not be regarded as auxiliary actors but as integral components of epidemic intelligence, risk communication, and response effectiveness.
Three strategic priorities emerge:
- Institutionalize RCCE as a core pillar of health security, embedded in routine systems rather than activated only during crises
- Invest sustainably in CHWs, including training, supervision, fair remuneration, and formal recognition within national health systems
- Strengthen the community-health system interface, ensuring that trust, local knowledge, and social dynamics are leveraged as strategic assets
Such shifts are essential not only for improving outbreak response but also for advancing equitable access to health, in line with global commitments to universal health coverage.
Investing where it matters most
The lessons from measles outbreak response in Northern Côte d’Ivoire are clear: effective epidemic preparedness depends not only on technical capacity, but on trust, proximity, and sustained community engagement.
CHWs stand at the heart of this equation. Investing in their capacity, recognition, and integration is not a peripheral choice; it is a strategic imperative for strengthening health systems and advancing global health security.
In the face of future epidemics, the question is no longer whether communities should be involved, but how far health systems are willing to go to place them at the center of preparedness and response.
Disclaimer
The views expressed in this article are those of the author and do not necessarily reflect the official position of any affiliated organization