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Antimicrobial-resistant Salmonella Serotypes in Feces of Bison in North Dakota

机译:北达科他州野牛粪便中的耐药沙门氏菌血清型

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The objective of this study was to determine the occurrence of Campylobacter, Salmonella and Escherichia coli O157:H7 in fecal samples from a herd of bison and determine antimicrobial susceptibility patterns of pathogens isolated. Fecal grabs were obtained from the rectum of each bison (n=20). None of the fecal samples tested positive for E. coli 0157:H7 or Campylobacter spp. Two of 20 (10%) bison fecal samples tested positive for Salmonella spp. The Salmonella isolates belonged to the serotypes Salmonella Typhimurium (Copenhagen) and Salmonella Worthington. Both isolates were resistant to the same 13 of 20 antimicrobials tested, including macrolides (erythromycin, tilmicosin, tylosin), tetracyclines (chlortetracycline, oxytetracycline), florfenicol, most sulfonamides and penicillin. S. Worthington was also resistant to ampicillin. They were susceptible to at least six antimicrobials including ceftiofur, enrofloxacin and some aminoglycosides.
机译:这项研究的目的是确定一群野牛的粪便样品中弯曲杆菌,沙门氏菌和大肠杆菌O157:H7的发生,并确定分离的病原体的抗菌药敏模式。从每个野牛的直肠中获取粪便(n = 20)。没有任何粪便样品的大肠杆菌0157:H7或弯曲杆菌属呈阳性。 20个(10%)野牛粪便样品中有两个测试沙门氏菌属呈阳性。沙门氏菌分离株属于鼠伤寒沙门氏菌(哥本哈根)和沃辛顿沙门氏菌的血清型。两种分离物均对所测试的20种抗微生物药中的13种具有抗药性,包括大环内酯类(红霉素,替米考星,泰乐菌素),四环素类(氯四环素,土霉素),氟苯尼考,大部分磺胺类药物和青霉素。 S. Worthington对氨苄西林也有抗药性。他们对至少六种抗菌药物敏感,包括头孢噻呋,恩诺沙星和一些氨基糖苷。

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