The anthropogenic fingerprint on emerging infectious diseases

A scientific study analyzed over 58,000 outbreak records for 32 diseases, revealing that human-driven ecosystem changes and human-wildlife-livestock contact significantly shape the geography of emerging infectious diseases. Outbreak risks are highest in mosaic landscapes, and healthcare access strongly influences reporting rates.
Why it matters
The findings underscore the multi-causal nature of infectious disease emergence, emphasizing the need for tailored, ecosystem-based public health interventions, alongside greater investment in health systems and 'One Health' pathogen surveillance to prevent future epidemics and pandemics.
Emerging infectious diseases are a hallmark of the Anthropocene 1 , 2 . Human-driven ecosystem changes and human–wildlife–livestock contact can drive the emergence of zoonotic and vector-borne diseases 3 , 4 , 5 , but how much these processes shape landscapes of outbreak risk is poorly understood, beyond a few well-studied systems 6 , 7 , 8 . Here we consolidate 58,319 outbreak event records for 32 diseases and systematically test how 16 hypothesized social and environmental drivers impact outbreak geographies, while accounting for detection and reporting biases. We show that outbreak risks are typically highest in mosaic landscapes where people and livestock live alongside forests and fragmented ecosystems. These combined factors, along with long-term declines in precipitation, share strong impacts across several vector-borne diseases (for example, dengue, Lyme disease and zoonotic arboviruses).
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