This methodical surveillance is the core of the PREZODE initiative, a program that treats human health, animal welfare, and environmental stability as a single, inseparable cloth. Under the guidance of Nguyen Viet Hung, researchers have moved out of distant laboratories and into the wet markets and small-holdings of the Vietnamese countryside. They are looking for the precise moment when a virus might leap from a bird or a bat into a human host—a transition that has historically happened in silence until it was too late to contain.
The geography of rural Vietnam makes this work both difficult and essential. The country’s traditional VAC farming system—an acronym for garden (Vuon), pond (Ao), and livestock pen (Chuong)—deliberately brings these three worlds together to recycle agricultural waste. While efficient, this system creates a landscape of constant interaction between species. By mapping these contact networks, the researchers are not just collecting data; they are creating a ledger of potential risks that allows for intervention before a local outbreak can expand.
The strength of this model lies in its integration. Supported by technical experts from the French institutes CIRAD and IRD, the Vietnamese teams operate across ministries, breaking down the administrative walls between agricultural policy and medical practice. They swab the surfaces of market stalls and monitor the ancient wildlife trade routes, turning the province of Thai Nguyen into a living laboratory for pandemic prevention.
It is a work of patience and proximity. By training local health workers to understand the ecology of their own surroundings, the initiative ensures that the defense is not imposed from the top down, but built from the soil up. In the careful hands of these researchers, the study of a bat’s saliva or a chicken’s health becomes a fundamental practice of modern prevention.