STOP SPILLOVER AT THE SOURCE

The report argues that preventing future pandemics requires a systems-based approach to stop zoonotic spillover at its source. It identifies the 'wildlife value chain'—from tropical deforestation frontiers to urban markets—as the primary driver of risk, where human, livestock, and wildlife interactions facilitate pathogen mutation and transmission. The framework proposes a 'Planetary Health Agenda' that integrates conservation, public health, and sustainable food systems, with specific action plans for Southeast Asia, Central Africa, and South America to mitigate both current and emerging risks.

• Zoonotic spillover is driven by a systemic cascade where tropical deforestation, linear infrastructure, and agricultural expansion increase human and livestock contact with wildlife, particularly in high-biodiversity areas.
• The 'wildlife value chain' amplifies spillover risk as animals are harvested, caged, and transported, creating stressful environments that increase viral shedding and the probability of mutations.
• Current public health agendas are insufficient because they focus on diagnosis and containment after spillover has occurred, rather than addressing the environmental root causes.
• In Southeast Asia and China, spillover risk is high due to the demand for exotic wild meat, pets, and medicinal products, leading to the systematic defaunation of standing forests.
• In Central Africa, deforestation driven by small-scale and commercial agriculture increases interactions with primates, while the Ebola virus remains a significant risk due to its virulence and sequential outbreaks.
• While South America has had no known pandemic-potential spillovers historically, risks are increasing due to rising deforestation, defaunation, and urban demand for wild meat.
• Global connectivity, including the Belt and Road Initiative and demand for animal protein in North America and the EU, creates new opportunities for novel viral mixing and the emergence of 'super viruses'.
• Effective prevention requires a 'One Health' approach that integrates the management of land and wildlife into public health programs, moving toward a broader Planetary Health Agenda.
• High-leverage interventions include protecting tropical forests under the 30X30 goal, implementing deforestation-free commodity supply chains, and using behavior change campaigns to reduce luxury demand for wildlife.

APA

Terrana, A., & Shaw, R. (2021). STOP SPILLOVER AT THE SOURCE. WWF International. https://www.worldwildlife.org/documents/743/64a5w27r3o_Stop_Spillover_at_the_Source.3_8_23.pdf

Chicago

Terrana, Annika, and Rebecca Shaw. STOP SPILLOVER AT THE SOURCE. WWF International, 2021. https://www.worldwildlife.org/documents/743/64a5w27r3o_Stop_Spillover_at_the_Source.3_8_23.pdf.

Wikipedia

{{cite report |last1=Terrana |first1=Annika |last2=Shaw |first2=Rebecca |title=STOP SPILLOVER AT THE SOURCE |publisher=WWF International |date=March 2021 |url=https://www.worldwildlife.org/documents/743/64a5w27r3o_Stop_Spillover_at_the_Source.3_8_23.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{terrana2021stop, author = {Terrana, Annika and Shaw, Rebecca}, title = {{STOP SPILLOVER AT THE SOURCE}}, institution = {WWF International}, year = {2021}, month = mar, url = {https://www.worldwildlife.org/documents/743/64a5w27r3o_Stop_Spillover_at_the_Source.3_8_23.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }