ArticleBMC research notes2026
Phenotypic and molecular characterization of cefotaxime-resistant Klebsiella pneumoniae from chicken litter of selected farms in Uganda.
Article in BMC research notes, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivePoultry farm environments are recognized as reservoirs of antimicrobial-resistant bacteria with implications for One Health. Klebsiella pneumoniae, a clinically important opportunistic pathogen, has shown rising resistance to third-generation cephalosporins, including cefotaxime. However, data on cefotaxime-resistant K. pneumoniae (CRKP) in poultry environments in Uganda remain limited. This study determined the proportion and characterized CRKP isolated from chicken farm litter in central Uganda. A retrospective study was conducted using 98 archived environmental litter samples collected from 20 commercial broiler farms in Wakiso District, Uganda. Selective culture and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) were used to identify CRKP. Antimicrobial susceptibility testing was performed using the disk diffusion method. Phenotypic assays assessed virulence-associated traits, and PCR was used to detect the ESBL-associated blaCTX-M-15 gene.
resultCRKP was detected in 32.7% (32/98) of samples. All isolates were multidrug resistant (MDR), with universal resistance to tetracycline, trimethoprim-sulfamethoxazole, and ampicillin, while no resistance to imipenem was observed. Biofilm formation and hyper mucoviscosity were detected in 21.9% and 18.8% of isolates, respectively. Although all isolates expressed an ESBL phenotype, blaCTX-M-15 was detected in only 18.8%. Poultry environments are reservoirs of MDR-CRKP, revealing the need for strengthened antimicrobial stewardship and environmental AMR surveillance.
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