WHAT THE EVIDENCE SAYS
Researchers harmonized 58,319 outbreak events for 32 diseases and tested 16 social and environmental drivers while modeling reporting bias. Outbreak risk was often higher in forested, fragmented mosaic landscapes with people and livestock, and several vector-borne diseases shared strong responses to fragmentation and long-term drying. Directly transmitted zoonoses shared few consistent drivers. Reporting declined by a median 32% for each additional hour of travel time to a health facility.
WHY IT MATTERS / OUR READ
The study weakens the search for one global ecological lever against emerging disease. Landscape intervention can matter, but prevention and surveillance need to be pathogen- and place-specific—and healthcare access is itself part of the observed disease map.
CAVEATS / UNCERTAINTY
The analysis is observational and assembled from heterogeneous surveillance systems, with sparse data for several high-concern pathogens. Associations are not causal estimates for individual diseases, and under-detection remains a central limitation.
SOURCE
Nature
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