Climate Change and Antimicrobial Resistance Converge in Animal Diseases, New Research Warns - citybuzz
Climate change is driving antimicrobial resistance in animal diseases, warns a new editorial in Animal Diseases. A study of 488,232 Salmonella genomes shows ARGs rising with warming, urging One Health action.
A new editorial published inAnimal Diseasesargues that climate change is reshaping the fight against antimicrobial resistance (AMR) in animal diseases, moving the issue beyond antibiotic use alone. The piece, titled ‘Climate change and AMR in animal diseases: a one health perspective on emerging global risks,’ highlights how warming temperatures, floods, intensive farming, wastewater, and food systems can connect resistant bacteria across animals, environments, and people. Using non-typhoidalSalmonellaas a sentinel pathogen, the authors propose a One Health framework to understand how climate pressures may weaken ecological barriers that once helped contain AMR. The editorial, published on June 29, 2026, by researchers from the Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, is supported by a companion study inThe Lancet Planetary Healththat analyzed 488,232Salmonellagenomes from 139 countries across 1940–2023. The genomic study found that global average antimicrobial resistance gene (ARG) abundance inSalmonellaincreased by 38%, with climate change associated with a 10% rise. Future modeling suggested that low-emission pathways combined with strengthened antibiotic stewardship could reduceSalmonellaARGs by 24% compared with high-emission scenarios. Traditionally, AMR has been addressed through antimicrobial stewardship, infection control, and better prescribing. But the editorial argues that animal-disease systems are increasingly exposed to pressures that cross sectors. Rising temperatures can favor bacterial growth and horizontal gene transfer, while extreme precipitation can disperse ARGs through agricultural runoff, sewage, rivers, and food chains. Zoonotic pathogens likeSalmonellamove naturally across these interfaces, making them useful indicators of wider human–animal–environment risks. The editorial’s central contribution is a practical risk map describing a One Health–climate convergence nexus where non-typhoidalSalmonellaand ARGs circulate among hospitals, intensive agriculture, sewage treatment systems, watersheds, farms, food products, and retail environments. Climate change can intensify this loop through heat-related effects on bacteria and weather-driven movement of contaminated water. The article also raises the possibility that climate stress may influence pathogen adaptation in production systems, though it treats this as a hypothesis requiring broader validation. The authors call for a shift from reacting to resistant infections to anticipating where AMR risks may intensify. They emphasize that antimicrobial stewardship remains the foundation of AMR control, but it should be paired with climate data, animal-health monitoring, and environmental surveillance. The editorial offers clear entry points for policy and practice: veterinary services can use climate signals to identify high-risk periods for outbreaks; public-health agencies can connect genomic surveillance with rainfall, temperature, wastewater, livestock, and antimicrobial-use data; and food-safety systems can strengthen monitoring after floods and heat waves. For low- and middle-income countries, the paper highlights the need for affordable sequencing, trained personnel, and fair data-sharing agreements. Most importantly, the work suggests that climate mitigation, animal health, sanitation, and antibiotic stewardship should be treated as one interconnected investment in global health security, especially in regions where climate vulnerability and AMR burden overlap. The full editorial is available athttps://doi. org/10. 1186/s44149-026-00255-5.