Salmonella is a type of zoonotic bacteria that represents an economic and public health concern worldwide. Difficulties in sample collection from migratory birds mean little is known about their importance as a reservoir of Salmonella. The present study evaluated the prevalence and potential risk of Salmonella enterica in migratory birds. From 2012–2017, 3661 cloacal swabs from migratory birds were collected in South Korea and tested to isolate S. enterica. Strains were tested for antimicrobial resistance and the presence of virulence genes. Thirty-six S. enterica strains, including S. enterica serovar Typhimurium (n = 19), S. Berta (n = 16), and S. Virchow (n = 1), were isolated from 34 birds. Two migratory birds were simultaneously co-infected with two serotypes. S. enterica was isolated from the Mallard duck, Northern pintail, Eurasian wigeon, Spot-billed duck, Eastern great egret, and Intermediate egret. S. Virchow was resistant to ciprofloxacin, with a point mutation (Ser-83-Phe) in the gyrA gene. Ten virulence genes were detected; sixteen strains were positive for all ten virulence genes. Salmonella was isolated from different migratory bird species and geographic locations with up to 100 % similarity of PFGE type. Eight S. Virchow strains taken from migratory birds, poultry farms, and chicken meat showed the same PFGE type. Salmonella was transmitted across species, space, and time in migratory birds. These birds may play a role in the dispersal of pathogenic and antimicrobial-resistant Salmonella and sporadic Salmonella infections in poultry; therefore, they may represent a direct or indirect public health threat.

沙门氏菌是一种人畜共患细菌，代表着全球范围内的经济和公共卫生问题。候鸟样本收集的困难意味着人们对它们作为沙门氏菌的重要性知之甚少。本研究评估了候鸟肠炎沙门氏菌的患病率和潜在风险。从2012-2017年，在韩国收集了3661头候鸟的泄殖腔拭子，并进行了分离肠炎链球菌的测试。测试菌株的抗药性和毒力基因的存在。三十六个沙门氏菌菌株，包括沙门氏菌鼠伤寒沙门氏菌（Ñ = 19），S。波塔（n = 16）和S. Virchow（n = 1）是从34羽鸟类中分离出来的。两只候鸟同时感染了两种血清型。肠炎沙门氏菌从野鸭，北长尾pin，欧亚锦葵，斑嘴鸭，大白鹭和中白鹭中分离出来。S. Virchow对环丙沙星具有抗性，在gyr A基因中有一个点突变（Ser-83-Phe）。检测到十种毒力基因；所有十个毒力基因的十六个菌株均为阳性。沙门氏菌是从不同的候鸟物种和地理位置分离出来的，与PFGE类型的相似性高达100％。八小号。从候鸟，家禽场和鸡肉中提取的病毒菌株显示出相同的PFGE类型。沙门氏菌在候鸟中跨物种，空间和时间传播。这些鸟可能在致病性和抗菌性的分散作用沙门氏菌和零星的沙门氏菌在家禽感染; 因此，它们可能代表直接或间接的公共卫生威胁。