The World Health Organization (WHO) South-East Asia Region has issued an urgent call for a transition toward science-led action and a more robust WHO science-led action One Health approach to combat a growing array of interconnected health threats. As climate volatility and environmental degradation accelerate, health officials warn that traditional, siloed medical responses are no longer sufficient to protect populations across the region.
The directive comes as part of the celebrations for World Health Day, centered on the theme “Together for Health. Stand with Science.” The initiative emphasizes the critical need to integrate scientific evidence directly into policy-making and public health preparedness to ensure that data-driven insights translate into immediate, life-saving interventions.
At the heart of this strategy is the “One Health” perspective—a collaborative, multisectoral approach that recognizes the inextricable link between the health of people, animals, and the shared environment. According to health authorities, this integrated framework is essential for managing risks that do not respect borders or species, such as zoonotic spillovers and climate-induced epidemics.
“Across the Region, health risks are increasingly driven by climate variability, environmental change, and evolving disease patterns,” said Dr. Catharina Boehme, Officer-in-Charge of the WHO South-East Asia Region. “Responding effectively requires stronger, science-led and cross-sectoral approaches grounded in a One Health perspective.”
Addressing the Climate-Health Nexus in South Asia
One of the most pressing manifestations of these evolving risks is the intensification of extreme heat, which has become a recurring public health crisis across the Indian subcontinent. To mitigate this, a South Asia Hub of the Global Heat Health Information Network (GHHIN) is currently being developed. This initiative is led by the Council on Energy, Environment and Water (CEEW) as part of a joint programme between the WHO and the World Meteorological Organization (WMO) on Climate and Health.
The Hub, which receives support from the Wellcome Trust, is designed to bridge the gap between meteorological data and clinical action. It operates in close coordination with the India Meteorological Department (IMD) and the South Asia Climate and Health Desk at the Indian Institute of Tropical Meteorology (IITM). The primary objective is to transform complex scientific evidence into early warning systems and practical community protections to reduce heat-related mortality and morbidity.
Dr. Boehme noted that the Hub serves as a practical application of the One Health philosophy. “The Hub reflects a One Health approach in action, bringing together climate science, public health, and partnerships to deliver solutions that save lives,” she said. “As extreme heat intensifies, standing with science means turning evidence into early warnings, preparedness, and protection for those most at risk.”
Regional Models of Science-Driven Response
Although the overarching goal is regional integration, several countries in South-East Asia are already implementing targeted, science-based models that the WHO views as scalable blueprints for others.
In Bangladesh, the focus has shifted toward integrated dengue surveillance. By utilizing more sophisticated data modeling, the country is improving its ability to predict outbreaks and coordinate responses before cases peak. Similarly, Thailand has adopted a “whole-of-government” approach, where high-level political commitment has streamlined the early detection and response to emerging infectious diseases, reducing the time between the first signal of an outbreak and the deployment of countermeasures.
Other nations are focusing on the animal-human interface to prevent the next pandemic. Sri Lanka and Bhutan have made significant strides in zoonotic disease prioritization. By conducting joint risk assessments across veterinary and human health sectors, these countries are better equipped to identify high-risk pathogens in wildlife and livestock before they jump to human populations.
India is meanwhile expanding its digital surveillance infrastructure. The current effort involves integrating multiple data streams—ranging from clinical reports to environmental sensors—to create a more comprehensive early warning system for public health emergencies.
Comparative Regional Health Initiatives
| Country | Primary Focus Area | Strategic Approach |
|---|---|---|
| Bangladesh | Dengue Control | Integrated surveillance and outbreak prediction |
| Thailand | Emerging Infections | Whole-of-government early detection |
| Sri Lanka/Bhutan | Zoonotic Diseases | Cross-sectoral joint risk assessment |
| India | Public Health Alerts | Multi-stream digital surveillance systems |
The Path Toward Interoperable Surveillance
Despite these individual successes, the WHO warns that the region’s overall resilience is hampered by fragmented data systems. To truly scale the “One Health” approach, the organization is calling for the development of interoperable surveillance systems—platforms that allow different countries and different sectors (such as agriculture, environment, and health) to share data in real-time.
The transition requires a sustained commitment to investment in analytics and science. Without a unified data architecture, the ability to detect a pathogen in a remote forest or a sudden spike in heat-related illness in an urban center remains delayed, costing lives during the critical early windows of intervention.
To achieve this, the WHO has outlined a framework for collective action across four primary stakeholder groups:
- Governments and Institutions: Priority must be placed on funding science-based policies and institutionalizing the One Health framework within national law.
- Scientists and Researchers: The focus must shift toward generating “actionable evidence”—research that can be immediately applied to field operations.
- Health Workers: Frontline providers are urged to champion evidence-based care and act as the primary link between scientific research and patient outcomes.
- Communities: There is a critical need for the public to seek trusted, science-backed information and adopt protective behaviors during health crises.
For more information on the global standards for integrated health, the WHO One Health page provides updated guidelines on cross-sectoral collaboration.
Disclaimer: This article is provided for informational purposes only and does not constitute medical advice. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
The next phase of this regional effort will involve the continued rollout of the GHHIN South Asia Hub and the alignment of national surveillance systems under the WHO-WMO joint programme. Official updates on the integration of these systems are expected during upcoming regional health summits.
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