Explain in brief concept of One Health and give three programmatic actions a district health officer should prioritise to operationalize One Health
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One Health district implementation programmatic actions operationalize
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https://esmed.org/community-level-one-health-strategies-for-…
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One Health: Concept and District-Level Operationalization
What is One Health?
One Health is a collaborative, multisectoral, and transdisciplinary approach that recognizes the health of humans, animals (domestic and wild), plants, and their shared environment as deeply interconnected and inseparable. No single sector - medicine, veterinary science, or environmental management - can adequately protect public health on its own.
The concept rests on three intersecting domains:
| Domain | Scope |
|---|---|
| Human health | Infectious diseases, nutrition, AMR, NCDs |
| Animal health | Zoonoses, livestock disease, wildlife surveillance |
| Environmental/Ecosystem health | Water safety, deforestation, climate, biodiversity loss |
Key drivers that make One Health necessary include:
- About 60% of known infectious diseases in humans are zoonotic (originating in animals)
- Roughly 75% of emerging infectious diseases (e.g., Ebola, COVID-19, Nipah, avian influenza) have animal origins
- Antimicrobial resistance (AMR) flows bidirectionally between humans, animals, and the environment (the "tripartite" AMR reservoir)
- Climate change and land-use changes accelerate spillover events
As stated directly in Fishman's Pulmonary Diseases and Disorders: "One Health is a global collaborative, multisectoral, and transdisciplinary approach to disease that recognizes the interconnection between people, animals, plants, and their shared environment."
The approach is now formally endorsed by the Quadripartite (WHO, FAO, WOAH/OIE, and UNEP) through the One Health Joint Plan of Action 2022-2026.
Three Programmatic Actions a District Health Officer Should Prioritize
1. Establish a Multisectoral One Health Coordination Platform
The single most important structural action is creating a formal, standing coordination mechanism at the district level that brings together:
- District health department (human medicine, epidemiology)
- District veterinary/livestock office
- Environmental/natural resources management
- Agriculture and food safety inspectorates
- Wildlife authority representatives (where relevant)
- Local government administration
In practice, this means:
- Convening regular joint technical meetings (monthly or quarterly) with a shared agenda
- Defining clear roles, communication channels, and a joint emergency protocol
- Using tools like the OH-SMART toolkit (One Health Systems Mapping and Analysis Resource Toolkit) to map existing programs and identify gaps
Without this platform, siloed responses persist - a disease outbreak in livestock may not be reported to the human health system in time to prevent spillover, and vice versa.
2. Implement Integrated Zoonotic Disease Surveillance and Joint Outbreak Response
A district health officer should establish cross-sectoral disease surveillance that links human, animal, and environmental data streams into a common early-warning system.
Concrete steps:
- Apply the One Health Zoonotic Disease Prioritization (OHZDP) process - a structured, multisectoral workshop method that ranks zoonotic diseases of greatest local concern (e.g., rabies, brucellosis, avian influenza, Rift Valley fever) using impact and readiness criteria
- Develop a joint rapid response team (human health + veterinary + environmental officers) with a shared investigation protocol for unusual animal die-offs, clusters of febrile illness, or suspected zoonotic events
- Ensure animal health data (livestock morbidity/mortality at farms, wildlife die-offs) feeds into the district health information system, not just the veterinary department's silo
- Conduct joint sentinel surveillance at human-animal interfaces: abattoirs, live animal markets, farms adjacent to dense settlements, and wildlife-human boundary zones
This directly addresses the reality that zoonotic outbreaks are almost always detected first in animals before clinical presentation in humans - early animal signals are free, actionable intelligence.
3. Build Intersectoral Workforce Capacity and Community Engagement
Structural coordination and surveillance systems will fail without trained people and community buy-in at the last mile.
Workforce capacity:
- Conduct joint training for frontline health workers (community health workers, nurses, veterinary extension officers, environmental health officers) on zoonotic disease recognition, reporting, and basic infection control
- Train health workers to take detailed exposure histories in all febrile illness cases (animal contact, water sources, recent wildlife exposure, occupation)
- Conduct tabletop simulation exercises that test the joint response plan across sectors
Community engagement:
- Work with community leaders, farmers, and animal handlers to promote responsible antimicrobial use in both human and veterinary settings (a key AMR intervention)
- Integrate risk communication on zoonoses, food safety (safe slaughter, pasteurization, hygiene), and environmental hazards into existing community health programs
- Support behavior change around human-animal interface risks: safe handling of sick animals, safe disposal of animal carcasses, avoiding consumption of bushmeat
This action operationalizes the "whole of society" principle in the WHO/FAO One Health Joint Plan of Action and ensures the framework reaches beyond government offices into the communities where spillover events actually occur.
Summary Table
| Priority | Core Action | Expected Outcome |
|---|---|---|
| 1. Coordination | Establish a joint district One Health platform (health + veterinary + environment) | Eliminates sectoral silos; enables unified planning and response |
| 2. Surveillance & Response | Integrated zoonotic surveillance + joint rapid response team | Earlier detection of spillover events; faster, coordinated outbreak control |
| 3. Capacity & Community | Cross-sectoral training + community engagement on AMR, zoonoses, food safety | Sustained frontline capability; community as first line of defense |
These three actions are grounded in the WHO One Health framework and the practical implementation science from the ESMED community-level roadmap, and align with the five strategic objectives of the Quadripartite One Health Joint Plan of Action (2022-2026).
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