ArticleBMC microbiology2023
Antimicrobial resistance profiles of salmonella spp. and escherichia coli isolated from fresh nile tilapia (oreochromis niloticus) fish marketed for human consumption.
Article in BMC microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 34 citations in OpenAlex.
- Zoonotic bacterial pathogens in global fish production: transmission, resistance, and one health control strategies.Veterinary research communications · 2026Review
- Shiga Toxin-ProducingVeterinary sciences · 2026Review
- Occurrence and antimicrobial susceptibility patterns ofFrontiers in microbiology · 2026Article
- Genetic insights into antimicrobial resistance and virulence characteristics of Salmonella enterica isolated from Nile tilapia sourced from retail markets in Thailand.BMC microbiology · 2025Article
- Microbiological Monitoring and Microbial Susceptibility ofAntibiotics (Basel, Switzerland) · 2025Article
- Glycolipopeptide biosurfactants from Serratia marcescens exhibit broad-spectrum antimicrobial activity for sustainable biocontrol of multidrug-resistant pathogens.World journal of microbiology & biotechnology · 2025Article
- Herbs impact on poultry health and antimicrobial resistance: a scoping review with one health perspective.BMC veterinary research · 2025Article
- Seasonal and environmental drivers of antibiotic resistance and virulence in Escherichia coli from aquaculture and their public health implications.Scientific reports · 2025Article
- Detection and taxonomic identification of emerging pathogenic yeasts in surface waters from Lagoon Systems in Rio de Janeiro, Brazil.Environmental monitoring and assessment · 2025Article
- Preliminary survey of biofilm forming, antibiotic resistant Escherichia coli in fishes from land based aquaculture systems and open water bodies in Bangladesh.Scientific reports · 2025Article
- Retrospective analysis of antimicrobial resistance ofFrontiers in veterinary science · 2025Article
- Immunoprotective test and whole-genome sequencing analysis of the attenuated S02 strain ofFrontiers in microbiology · 2025Article
- Antibacterial properties ofFrontiers in nutrition · 2025Article
- Bacterial Quality and Molecular Detection of Food Poisoning Virulence Genes Isolated from Nasser Lake Fish, Aswan, Egypt.International journal of food science · 2024Article
- Persistent Colonization of Ciprofloxacin-Resistant and Extended-Spectrum β-Lactamase (ESBL)-ProducingInfection and drug resistance · 2024Article
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9 authors at 4 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundSalmonella spp. and pathogenic strains of Escherichia coli are among the major foodborne zoonotic pathogens. These bacterial pathogens cause human illnesses characterized by hemorrhagic colitis, vomiting, nausea, and other agent-related symptoms. The increasing occurrence of antimicrobial resistance in these pathogens is also a serious public health concern globally. Regular surveillance of phenotypes and genotypes of Salmonella spp. and Escherichia coli from animal-derived foods is necessary for effective reduction and control of these foodborne pathogens. This study was conducted to assess the occurrence, antimicrobial resistance, virulence genes and genetic diversity of Salmonella spp. and E. coli isolates from fresh Nile tilapia obtained from retail markets in Nairobi, Kenya.
methodsA total of 68 fresh Nile tilapia fish samples were collected from retail markets and used for isolation of Salmonella spp. and E. coli. Antimicrobial susceptibilities of the isolates weretested by Kirby-Bauer agar disc diffusion method. According to the antimicrobial resistance profiles, the multi-drug resistant isolates were identified by 16 S rRNA sequencing and phylogenetic analysis using the Bayesian inference method. The MDR Salmonella spp. and E. coli isolates were subjected to PCR-based screening for the detection virulence and antibiotic resistance genes.
resultsThe prevalence of contamination of the fish samples with Salmonella spp. and E.coli was 26.47% and 35.29% respectively. Overall phenotypic resistance among the Salmonella spp. ranged from 5.5% for ceftazidime, chloramphenicol, meropenem, nitrofurantoin and streptomycin and 22.2% for penicillin-G. For E. coli phenotypic resistance ranged from 4.2% for ceftazidime and chloramphenicol and 25% for rifampicin. Multi-drug resistance was observed in three Salmonella spp. and two E. coli isolates. Results of 16 S rRNA sequences, sequence alignment and phylogenic trees confirmed the identified MDR isolates as S. typhymurium WES-09, S. typhymurium MAK-22, S. typhimurium EMB-32 and E. coli MAK-26 and E. coli LAN-35. The presence of antibiotic-resistance genes belonging to β-lactamases, tetracycline, sulfonamide, trimethoprim and aminoglycosides-resistant genes were detected in all the identified MDR isolates.
conclusionsThe findings from this study indicate that Nile tilapia (Oreochromis niloticus) sold in retail markets can acts as reservoirs of Salmonella spp. and E. coli pathogens linked to human disease, some of which were multidrug resistance to critically important antimicrobials. Both microorganisms are of zoonotic significance and represent a significant public health risk to the society.
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