文献类型： 外文期刊
作者： Shen, Xuehuai 1 ; Yin, Lei 2 ; Zhang, Anyun 3 ; Zhao, Ruihong 2 ; Yin, Dongdong 2 ; Wang, Jieru 2 ; Dai, Yin 2 ; Hou, Hongyan 2 ; Pan, Xiaocheng 2 ; Hu, Xiaomiao 2 ; Zhang, Danjun 2 ; Liu, Yongjie 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Vet Med, Nanjing 210095, Peoples R China
2.Anhui Acad Agr Sci, Inst Anim Husb & Vet Sci, Livestock & Poultry Epidem Dis Res Ctr Anhui Prov, Anhui Prov Key Lab Livestock & Poultry Prod Safety, Hefei 230001, Peoples R China
3.Sichuan Univ, Coll Life Sci, Key Lab Bio Resource & Eco Environm, Anim Dis Prevent & Food Safety Key Lab Sichuan Pro, Chengdu 610017, Peoples R China
关键词： Salmonella; chicken; serovar; antimicrobial susceptibility; antibiotic resistance genes; biofilm formation; virulence genes; multilocus sequence typing
期刊名称：PATHOGENS （ 影响因子：3.7； 五年影响因子：3.7 ）
ISSN：
年卷期： 2023 年 12 卷 3 期
页码：
收录情况： SCI
摘要： Salmonella is one of the most important zoonotic pathogens that can cause both acute and chronic illnesses in poultry flocks, and can also be transmitted to humans from infected poultry. The purpose of this study was to investigate the prevalence, antimicrobial resistance, and molecular characteristics of Salmonella isolated from diseased and clinically healthy chickens in Anhui, China. In total, 108 Salmonella isolates (5.66%) were successfully recovered from chicken samples (n = 1908), including pathological tissue (57/408, 13.97%) and cloacal swabs (51/1500, 3.40%), and S. Enteritidis (43.52%), S. Typhimurium (23.15%), and S. Pullorum (10.19%) were the three most prevalent isolates. Salmonella isolates showed high rates of resistance to penicillin (61.11%), tetracyclines (47.22% to tetracycline and 45.37% to doxycycline), and sulfonamides (48.89%), and all isolates were susceptible to imipenem and polymyxin B. In total, 43.52% isolates were multidrug-resistant and had complex antimicrobial resistance patterns. The majority of isolates harbored cat1 (77.78%), blaTEM (61.11%), and blaCMY-2 (63.89%) genes, and the antimicrobial resistance genes in the isolates were significantly positively correlated with their corresponding resistance phenotype. Salmonella isolates carry high rates of virulence genes, with some of these reaching 100% (invA, mgtC, and stn). Fifty-seven isolates (52.78%) were biofilm-producing. The 108 isolates were classified into 12 sequence types (STs), whereby ST11 (43.51%) was the most prevalent, followed by ST19 (20.37%) and ST92 (13.89%). In conclusion, Salmonella infection in chicken flocks is still serious in Anhui Province, and not only causes disease in chickens but might also pose a threat to public health security.
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