title: Antimicrobial susceptibility profiles and molecular typing of Campylobacter jejuni and Campylobacter coli isolates from ducks in South Korea.
abstract: Campylobacter is a food-borne zoonotic pathogen that causes human gastroenteritis worldwide. Campylobacter bacteria are commensal in the intestines of many food production animals, including ducks and chickens. The objective of the study was to determine the prevalence of Campylobacter species in domestic ducks, and the agar dilution method was used to determine resistance of the isolates to eight antibiotics. In addition, multilocus sequence typing (MLST) was performed to determine the sequence types (STs) of selected Campylobacter isolates. Between May and September 2012, 58 duck farms were analyzed, and 56 (96.6%) were positive for Campylobacter. Among the isolates, 82.1% were Campylobacter jejuni, 16.1% were C. coli, and one was unidentified by PCR. Of the 46 C. jejuni isolates, 87.0%, 10.9%, and 21.7% were resistant to ciprofloxacin, erythromycin, and azithromycin, respectively. Among the C. coli isolates, all 9 strains were resistant to ampicillin, and 77.8% and 33.3% were resistant to ciprofloxacin and azithromycin, respectively. The majority of the Campylobacter isolates were classified as multidrug resistant. Twenty-eight STs were identified, including 20 STs for C. jejuni and 8 STs for C. coli. The most common clonal complexes in C. jejuni were the ST-21 complex and the ST-45 complex, while the ST-828 complex predominated in C. coli. The majority of isolates were of STs noted in ducks and humans from earlier studies, along with seven STs previously associated only with human disease. These STs overlapped between duck and human isolates, indicating that Campylobacter isolates from ducks should be considered potential sources of human infection.
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea.
authors.forename: Bai
authors.initials: B
authors.lastname: Wei
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea.
authors.forename: Se-Yeoun
authors.initials: SY
authors.lastname: Cha
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea.
authors.forename: Min
authors.initials: M
authors.lastname: Kang
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea.
authors.forename: Jae-Hee
authors.initials: JH
authors.lastname: Roh
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea.
authors.forename: Hye-Suk
authors.initials: HS
authors.lastname: Seo
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea.
authors.forename: Ran-Hee
authors.initials: RH
authors.lastname: Yoon
authors.affiliation: Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea hkjang@jbnu.ac.kr.
authors.forename: Hyung-Kwan
authors.initials: HK
authors.lastname: Jang
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002169:Campylobacter Infections / Q000382:microbiology* / Q000662:veterinary*; D017000:Campylobacter coli / Q000145:classification / Q000187:drug effects* / Q000235:genetics / Q000302:isolation & purification*; D016123:Campylobacter jejuni / Q000145:classification / Q000187:drug effects* / Q000235:genetics / Q000302:isolation & purification*; D004372:Ducks; D006801:Humans; D008826:Microbial Sensitivity Tests; D058885:Multilocus Sequence Typing; D011201:Poultry Diseases / Q000382:microbiology*
chemical_list: D000900:Anti-Bacterial Agents