Prevalence and antimicrobial-resistant Campylobacter jejuni and Campylobacter coli in free-range chickens in northwest Ethiopia

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dc.creatorWorku, M.
dc.creatorTessema, B.
dc.creatorFerede, G.
dc.creatorOchieng, Linnet
dc.creatorLeliso, S.A.
dc.creatorMutua, Florence
dc.creatorMoodley, Arshnee
dc.creatorGelaw, B.
dc.creatorGrace, Delia
dc.date2025-09-03
dc.date2025-06-26T10:17:28Z
dc.date2025-06-26T10:17:28Z
dc.date.accessioned2026-06-27T16:32:05Z
dc.description<i>Campylobacter enteritis</i> is the most common bacterial foodborne disease in humans. Long-term use of antibiotics in chicken production may result in antimicrobial resistance in <i>Campylobacter</i> strains. Information on the antimicrobial resistance profile of <i>Campylobacter</i> species among free-range chickens in Ethiopia is scarce. Hence, this study aimed to determine the prevalence and antimicrobial resistance of <i>Campylobacter jejuni</i> and <i>Campylobacter coli</i> among free-range chickens in Amhara National Regional state, northwest Ethiopia from November 1, 2022 to April 30, 2023. Cloacal swabs were collected from free-range backyard chickens, directly inoculated onto modified charcoal cefoperazone deoxycholate agar, and incubated at reduced O<sub>2</sub> concentration at 42°C for 48 hours. Suspected colonies were confirmed at the species level using matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The associated factors were analyzed using the Fisher exact test. A P <0.05 at 95% CI was considered statistically significant. Among the 286 cloacal samples, 15.0% (n = 43/286; CI: 10.2–19.5) were positive for <i>Campylobacter</i> species. <i>C. jejuni</i> (60.5%) was more frequent than <i>C. coli</i> (39.5%). Of the total isolates, 62.8% (n = 27/43), 51.2% (n = 22/43), and 16.3% (n = 7/43) of the <i>Campylobacter</i> species were resistant to tetracycline, ciprofloxacin, and erythromycin, respectively. Of the total <i>Campylobacter</i> species isolates, 9.3% (n = 4/43) were multidrug resistant. <i>Campylobacter</i> species resistance to tetracycline and ciprofloxacin was high in general among backyard chickens. Multidrug-resistant <i>Campylobacter</i> species were also identified, and they require special attention to prevent the potential dissemination of the strains to humans in the community.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/175335
dc.identifier.urihttp://hdl.handle.net/123456789/125688
dc.languageen
dc.publisherAmerican Society of Tropical Medicine and Hygiene
dc.rightsOpen Access
dc.sourceWorku, M., Tessema, B., Ferede, G., Ochieng, L., Leliso, S.A., Mutua, F., Moodley, A., Gelaw, B. and Grace, D. 2025. Prevalence and antimicrobial-resistant <i>Campylobacter jejuni</i> and <i>Campylobacter coli</i> in free-range chickens in northwest Ethiopia. American Journal of Tropical Medicine and Hygiene 113(3): 694–700.
dc.subjectantimicrobial resistance
dc.subjectchickens
dc.subjectpoultry
dc.titlePrevalence and antimicrobial-resistant Campylobacter jejuni and Campylobacter coli in free-range chickens in northwest Ethiopia
dc.typeJournal Article

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