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Presence of Salmonella enterica subsp. arizonae in bushmeat from the Mulundu department of the Ogooué–Lolo province, Gabon

Year: 2025

Type: article

Abstract: : In Africa, most investigations on Salmonella spp. have focused on isolates from humans, poultry, and domestic animals, whereas studies on wild terrestrial mammals remain limited. Consequently, the occurrence of Salmonella spp., particularly Salmonella enterica subsp. arizonae, in African wildlife is underreported. In Gabon, there is little to no information on the presence of antimicrobial-resistant S. enterica subsp. arizonae in bushmeat. This study aimed to isolate and characterise antibiotic resistance in S. enterica subsp. arizonae recovered from wildlife in Mulundu department, Lastoursville, Gabon. A total of 147 bushmeat samples representing 20 animal species were collected. After bacterial culture and identification, 23 samples (15.65%) from eight species were positive for S. enterica subsp. arizonae. The distribution of isolates was as follows: Peters’ duiker (34.78%), blue duiker (26.09%), African wood owl (13.04%), moustached monkey (8.69%), pangolin (4.35%), genet (4.35%), crocodile (4.35%), and African brush-tailed porcupine (4.35%). Resistance profiles revealed the presence of multidrug-resistant strains. One isolate from a moustached monkey showed resistance to three antibiotic families, namely sulfonamides (sulfonamide), fluoroquinolones (ofloxacin), and β-lactams (cefoxitin, ampicillin). Another isolate from a Peters’ duiker exhibited resistance to six antibiotics: cefotaxime, cefepime, sulfonamide, ertapenem, cefoxitin, and ampicillin. Additionally, isolates from Peters’ duiker (n=3), blue duiker (n=2), wood owl (n=1), genet (n=1), and pangolin (n=1) were resistant to ertapenem, cefoxitin, and ampicillin. These findings demonstrate the circulation of S. enterica subsp. arizonae in wildlife consumed as bushmeat in Gabon. This represents a potential source of antimicrobial-resistant pathogens for human populations relying on game meat.

Source: International Journal of Current Science Research and Review

DOI: 10.5281/zenodo.17213546

Authors: BEKALE OBAME Aimé Lionel, Loïc, MBEHANG NGUEMA Pierre, Philippe, LENDAMBA Romeo, Wenceslas, MAKANGA Boris, Kevin, OBAGUE MBEANG Jean, Constant, NDONG ATOME Guy, Roger, ZINGA KOUMBA Christophe, Roland

Institutions: Centre National de la Recherche Scientifique et Technologique, Centre de Recherche Médicales de Lambaréné, Université des Sciences et Techniques de Masuku

Language: English

Topic: Salmonella and Campylobacter epidemiology

Subfield: Food Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W7083588007

FWCI:

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