Data on antimicrobial resistance in Burkina Faso’s agricultural sector is still limited. This study assessed the occurrence of extended-spectrum β-lactamase-producing Escherichia coli (ESBL-Ec) and Klebsiella spp. (ESBL-K) in lettuce, environment, and gardeners’ stools in market gardens in Ouagadougou, Burkina Faso. A total of 356 samples were collected from three vegetable gardens (76 lettuce, 76 soil, 62 manure, 63 irrigation water, and 79 human stools). The ESBL-selective medium was used for initial selection of ESBL-producing bacteria, and the isolates were further identified using biochemical tests. An antibiotic susceptibility test was performed using the disk diffusion method. The overall prevalence of ESBL-Ec and/or ESBL-K in the samples was 232/356 (65.2%). Of the lettuce samples, the prevalence of ESBL-Ec was 19/76 (25.0%) and ESBL-K 33/76 (43.4%). In the market gardens environment, the prevalence of ESBL-Ec was 32/201 (15.9%) and ESBL-K 124/201 (61.7%). In the gardeners’ stools, the prevalence of ESBL-Ec was 42/79 (53.2%) and ESBL-K 24/79 (30.4%). Two ESBL-K isolates were found to produce NDM carbapenemase. Due to the high prevalence of ESBL-producing bacteria, which may also be carbapenemase producers, it is necessary to monitor pathogens in agricultural products with a “One Health” approach to limit and prevent infections in the population.

Extended-spectrum beta-lactamase (ESBL)-producing and multidrug-resistant Enterobacterales pose a major threat to both human and animal health. This study assessed the prevalence of ESBL-producing Escherichia coli (ESBL-Ec) and Klebsiella spp. (ESBL-K) on cattle farms in Ouagadougou, Burkina Faso, using a One Health approach. From May 2021 to September 2022, cattle faeces, farmers’ stools, their drinking water and farm soil samples were collected from semi-intensive and traditional farms. An ESBL-selective medium was used to obtain resistant isolates, which were further characterised using biochemical tests. Antimicrobial susceptibility testing was performed using the Kirby–Bauer disc diffusion method. ESBL-Ec and/or ESBL-K were detected in 188 of 322 samples (58.0%). The prevalence of ESBL-Ec isolates was 42.2% (136/322) and that of ESBL-K isolates was 24.5% (79/322). Notably, 156 of the 188 ESBL isolates (83.0%) exhibited multidrug resistance. The highest resistance rates were observed against tetracycline and cotrimoxazole. Importantly, no isolates showed resistance to meropenem, which was used to test for carbapenem resistance. This study highlights the presence of ESBL-Ec and ESBL-K among the humans, animals and environment of the cattle farms. Good hygiene and biosafety practices are essential to limit the potential spread of multidrug-resistant bacteria between different interfaces on farms.

Background and Aim: Antimicrobial resistance (AMR) poses a significant threat to global health, driven largely by antibiotic misuse in livestock farming. This pilot study explores cattle farmers’ antibiotic use practices and their implications for environmental and human health in peri-urban area of Ouagadougou. This study aimed to identify risky antibiotic use behaviors among cattle farmers and evaluate their contribution to environmental contamination and AMR dissemination. Materials and Methods: In April 2023, a survey was conducted among 50 cattle farm owners and managers across four peri-urban area of Ouagadougou, Burkina Faso. Data were collected using structured questionnaires through Kobo Toolbox. Farmers’ practices were categorized as “good” or “poor” based on cumulative scores derived from binary-coded responses. Logistic regression was used to identify associations between practices and AMR risk factors. Results: Among participants, 98% (n = 49) were male, 76% (n = 38) had no formal animal health training, and 96% (n = 48) used antibiotics, primarily tetracyclines. Practices associated with increased AMR risk included reliance on non-veterinary personnel for antibiotic administration and inadequate waste management. Multivariate analysis revealed that traditional farming methods significantly reduced contamination risks (p < 0.05). However, ownership of farms and using antibiotics solely for treatment were linked to higher odds of environmental contamination. Awareness of the implications of antibiotic residues in manure was low, with 82% of farmers uninformed about potential health risks. Conclusion: The study highlights prevalent antibiotic misuse and inadequate biosecurity measures among cattle farmers in Burkina Faso. These practices exacerbate AMR risks, necessitating urgent interventions. Strategies should include farmer education on biosecurity, stricter regulation of antibiotic use, and the promotion of sustainable farming practices. A One Health approach integrating human, animal, and environmental health is critical to addressing AMR challenges. Keywords: antibiotic use, antimicrobial resistance, burkina Faso, cattle farming, environmental contamination, one health.

Data on antimicrobial resistance in Burkina Faso’s agricultural sector is still limited. The study assessed the occurrence of extended spectrum β-lactamase -producing Escherichia coli (ESBL-Ec) and Klebsiella spp. (ESBL-K) in lettuce, environment, and gardeners’ stools in market gardens in Ouagadougou, Burkina Faso. A total of 356 samples were collected from three vegetable gardens (76 lettuce, 76 soil, 62 manure, 63 irrigation water and 79 human stools). ESBL-selective medium was used for initial selection of ESBL-producing bacteria, and the isolates were further identified using biochemical tests. Antibiotic susceptibility test was performed using the disk diffusion method. The overall prevalence of ESBL-Ec and/or ESBL-K in the samples was 232/356 (65.2%). Of the lettuce samples, the prevalence of ESBL-Ec was 19/76 (25.0%) and ESBL-K 33/76 (43.4%). In the market gardens environment, the prevalence of ESBL-Ec was 32/201 (15.9%) and ESBL-K 124/201 (61.7%). In the gardeners’ stools the prevalence of ESBL-Ec was 42/79 (53.2%) and ESBL-K 24/79 (30.4%). Two ESBL-K isolates were found to produce NDM carbapenemase. Due to the high prevalence of ESBL-producing bacteria, which may also be carbapenemase producers, it is necessary to monitor pathogens in agricultural products with a "One Health" approach to limit and prevent infections in the population.

Extended-spectrum beta-lactamase (ESBL) -producing and multidrug resistant Enterobacterales pose a major threat to both human and animal health. This study assessed the prevalence of ESBL-producing Escherichia coli (ESBL-Ec) and Klebsiella spp. (ESBL-K) in cattle farms in Ouagadougou, Burkina Faso, using a One Health approach. From May 2021 to September 2022, cattle faeces, farmers’ stools, their drinking water and farm soil samples were collected from semi-intensive and traditional farms. ESBL-selective medium was used to obtain resistant isolates, which were further characterized using biochemical tests. An-timicrobial susceptibility testing was performed using the Kirby-Bauer disc dif-fusion method. ESBL-Ec and/or ESBL-K were detected in 188 of 322 samples (58.0%). The prevalence of ESBL-Ec isolates was 42.2% (136/322) and ESBL-K isolates 24.5% (79/322). Notably, 156 of the 188 ESBL isolates (83.0%) exhibited multidrug resistance. The highest resistance rates were observed against tetracy-cline and cotrimoxazole. Importantly, no isolates showed resistance to mero-penem, which was used to test for carbapenem resistance. This study highlights the presence of ESBL-Ec and ESBL-K among humans, animals and the envi-ronment of the cattle farms. Good hygiene and biosafety practices are essential to limit the potential spread of multidrug resistant bacteria between different inter-faces on farms.

Klebsiella pneumoniae (K. pneumoniae) is a major pathogen involved in nosocomial and community-acquired infections, whose multidrug resistance (MDR) consti