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Galápagos wastewater is creating new reservoirs of antibiotic-resistant bacteria
A mobile microbiology laboratory deployed in the Galápagos archipelago reveals that wastewater-contaminated marine sites have substantially higher densities of antimicrobial resistance genes and drug-resistant bacteria, raising concerns about potential risks to human, animal, and ecosystem health. Study: Human wastewater contamination drives the emergence of multidrug-resistant bacteria in the Galápagos marine ecosystem. Image Credit: Ezume Images / Shutterstock A recent Nature Communications study evaluated how human wastewater contamination may promote the introduction, persistence, and diversification of multidrug-resistant bacteria in the Galápagos marine environment, using mobile laboratory-based metagenomic surveillance. AMR Surveillance Challenges Antimicrobial resistance (AMR) occurs when microorganisms, including bacteria, viruses, fungi, and parasites, acquire the ability to withstand drugs intended to kill or inhibit them. This phenomenon is a critical global health concern, with bacterial AMR associated with approximately five million deaths worldwide in 2021 and a burden projected to increase further. The impact of AMR is especially acute in lower- and middle-income countries (LMICs), where factors such as insufficient surveillance, inadequate infrastructure, rapid urbanization, and misuse of antimicrobials accelerate the spread of resistance. Relatively few studies have explored how environmental mechanisms and pathways contribute to AMR dissemination, particularly in LMICs where surveillance is constrained by limited resources. This knowledge gap...
