Prevalence and antibiotic resistance of coagulase-negative Staphylococci isolated from poultry farms in three regions of Ghana
Open accessAbstract
Abstract: The use of antibiotics in animal production has been associated with the development and spread of antibiotic-resistant organisms including commensals. Coagulase-negative Staphylococcus (CoNS) species, which were until recently considered non-pathogenic, have been associated with opportunistic infections and high resistance to several antibiotics. This study sought to determine the prevalence, identity, and phenotypic resistance of coagulase-negative Staphylococcus spp. isolated from some selected poultry farms and farm workers in the Ashanti, Brong Ahafo, and Greater Accra regions of Ghana. Poultry litter samples and oral swabs of poultry farm workers were collected, from which bacterial species were isolated, identified, and analyzed. Various selective media were used for the presumptive identification of the different species. Confirmation of bacterial identity was done using matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry. Antibiotic susceptibility testing of the isolates was performed using the Kirby-Bauer disk diffusion method. Zones of growth inhibition were interpreted based on the European Committee on Antimicrobial Susceptibility Testing (EUCAST) guidelines. Two hundred and fifty-six coagulase-negative Staphylococcus spp., comprising S. sciuri (42.97%), S. lentus (35.94%), S. gallinarum (6.64%), S. xylosus (4.30%), S. haemolyticus (3.91%), S. saprophyticus (1.95%), and S. cohnii (0.39%) were confirmed by MALDI-TOF. CoNS were isolated from samples from the Brong Ahafo (48.83%), Ashanti (33.59%), and Greater Accra (17.78%) regions. Isolates from poultry litter constituted 55.47%, and farm workers 44.53%. All the isolates were susceptible to amoxicillin/clavulanic acid and amikacin. The isolates exhibited high resistance toward tetracycline (57.03%), doxycycline (43.75%), and oxacillin (43.36%). Multi-drug resistance (MDR) was observed in 19.14% of the isolates. MDR was higher in isolates obtained from poultry farm workers (61.22%) than isolates from poultry litter (38.78%). The above findings call for stricter monitoring of antibiotic usage in both animal production and in humans. Keywords: poultry farms, antibiotic resistance, antibiotics, antimicrobials
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Another animal study reported an MDR prevalence of 19.1% in coagulase-negative Staphylococci.
“while another reported an MDR prevalence of 19.1% in coagulase-negative Staphylococci [47].”
From A Systematic Review on Antimicrobial Resistance in Ghana from a One Health Perspective (2024) · cites this paper as [47]
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- Authors
- Boamah, V. E., Agyare, C., Odoi, H., Adu, F., Gbedema, S., & Dalsgaard, A.
- Affiliations
- Kwame Nkrumah University of Science and Technology (GH)
- University of Copenhagen (DK)
- Corresponding author
- Agyare, Christian
- ORCID
- Venue
- Infection and Drug Resistance
- Publisher
- Informa UK Limited
- Published
- 2017-06
- Volume
- Volume 10
- Pages
- 175-183
- ISSN
- 1178-6973 (ISSN-L)
- PMC
- PMC5476628
- OpenAlex
- W2625161652
- Cited by
- 51
- References
- 31
- Citations by year
- 2026: 4 · 2025: 3 · 2024: 7 · 2023: 8 · 2022: 9 · 2021: 8 · 2020: 1 · 2019: 6 · 2018: 4 · 2017: 1
- FWCI
- 2.53
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Infection and Drug Resistance (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, cc-by-nc)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Dove Medical Press (Taylor and Francis Group) (submittedVersion, cc-by-nc)
- Funders
- United Nations Educational, Scientific and Cultural Organization
- Danish International Development Agency
- Topics
- Health Sciences › Medicine › Infectious Diseases › Antimicrobial Resistance in Staphylococcus
- Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Antibiotic Use and Resistance
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Antibiotic Resistance in Bacteria
- Keywords
- coagulase-negative staphylococci, antibiotic resistance, poultry farms, poultry litter, farm workers, multidrug resistance, Staphylococcus sciuri, Staphylococcus lentus, Staphylococcus gallinarum, tetracycline resistance, doxycycline resistance, oxacillin resistance, antimicrobial susceptibility, Ghana, occupational exposure
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