Wildlife Conservation Medicine Research Group (WildCoM), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
Wildlife Conservation Medicine Research Group (WildCoM), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
Sci Total Environ. 2022 Oct 20;844:157189. doi: 10.1016/j.scitotenv.2022.157189. Epub 2022 Jul 6.
The global emergence of antimicrobial-resistant (AMR) strains of Salmonella and Campylobacter is a serious public health concern. Both bacteria are leading causes of human gastrointestinal foodborne infections and the two most reported zoonoses in the European Union. By feeding on livestock carcasses, especially from intensive farming, as well as on landfill sites, obligate avian scavengers can become infected with zoonotic pathogens and AMR strains, and can be considered large-scale sentinels of the environmental burden. In this study, we assessed the occurrence and AMR of Salmonella spp. and Campylobacter spp. in 218 Eurasian griffon vultures (Gyps fulvus) captured in north-eastern Spain. We isolated Salmonella from 8.1 % of individuals and Campylobacter lari from 4.7 %. Among the 10 different Salmonella serovars found, monophasic S. Typhimurium was the most frequent. Genotyping analysis revealed same strains of monophasic S. Typhimurium shared by gulls, livestock and humans. Isolates from both bacterial species presented AMR to important antimicrobials (tetracyclines, fluoroquinolones and β-lactams). In conclusion, this study shows that Eurasian griffon vultures in north-eastern Spain are carriers of widespread AMR zoonotic Salmonella and Campylobacter. More comprehensive analyses are still needed to understand the potential risk of spill-over from those wild birds to humans.
全球出现的耐抗生素（AMR）沙门氏菌和弯曲杆菌菌株是一个严重的公共卫生关注问题。这两种细菌都是人类胃肠道食源性感染的主要原因，也是欧盟报告最多的两种人畜共患病。通过以牲畜尸体为食，特别是来自集约化养殖的牲畜尸体，以及以垃圾填埋场为食，专性禽类食腐动物可能会感染人畜共患病原体和 AMR 菌株，并可被视为环境负担的大规模监测者。在这项研究中，我们评估了东北西班牙地区 218 只欧亚兀鹫（Gyps fulvus）中沙门氏菌和弯曲杆菌的发生情况和 AMR 情况。我们从 8.1%的个体中分离出沙门氏菌，从 4.7%的个体中分离出弯曲杆菌。在所发现的 10 种不同的沙门氏菌血清型中，单相鼠伤寒沙门氏菌最为常见。基因分型分析显示，海鸥、牲畜和人类之间存在相同的单相鼠伤寒沙门氏菌菌株。两种细菌的分离株对重要的抗生素（四环素类、氟喹诺酮类和β-内酰胺类）均具有耐药性。总之，这项研究表明，东北西班牙的欧亚兀鹫是广泛存在的 AMR 人畜共患沙门氏菌和弯曲杆菌的携带者。仍需要进行更全面的分析，以了解这些野生鸟类向人类传播的潜在风险。
