Flood-associated disease outbreaks and transmission in Southeast Asia - Introduction 6

Authors: Boonfei Tan ¹

Patrick De Vera ²

Josephine Abrazaldo ²

Charmaine Ng ^1*

Source: Frontiers

Photo/Image Source: Unsplash

Introduction 6

ASEAN’s recent Leaders’ Declaration on the One Health Initiative and Health Cluster 2’s ‘all-hazards’ program (ASEAN, 2025) recognizes that emergencies such as floods, propagate simultaneously through people, animals, and water systems; consequently, preparedness and response cannot be siloed. AHA Centre disaster intelligence and ABVC analytics further underscore the need for interoperable indicators across health, agriculture/livestock, and water–environment authorities as floods and their disease consequences traverse provinces and borders. This position is congruent with the WHO/FAO/WOAH/UNEP Quadripartite One Health Joint Plan of Action, which prioritizes integrated surveillance and WASH/food-safety protections precisely because flooding elevates risks of water- and vector-borne disease and mobilizes environmental AMR. Within ASEAN’s information ecosystem, the hazard–exposure stream (AHA Centre Weekly Disaster Update and ADInet) is event-centric and geotemporal, describing flood intensity, extent, affected populations, and lifeline status; the ABVC dashboard is population- and administration-indexed, curating epidemic-prone syndromes; and wastewater/environmental surveillance contributes leading indicators of contamination and AMR pressure. Read as a single stack, these sources allow lead–lag analysis from inundation to environmental loading to clinical signal emergence, reconcile basin-scale impacts with district-level reporting, and surface risk concentration in low-lying informal settlements and agri-aquaculture corridors. Harmonizing on shared timestamps and spatial keys (administrative codes and river basins) preserves each platform’s native workflow while enabling One Health interpretation of flood-associated transmission dynamics across Member States. In the later sections of this review, we will explore these synergies with emerging techniques and integrative approaches.

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