ArticleBMC veterinary research2021
Prevalence, virulence factor and antimicrobial resistance analysis of Salmonella Enteritidis from poultry and egg samples in Iran.
Article in BMC veterinary research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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31 citing papers in PubMed, 50 citations in OpenAlex.
- Antibiotic Resistance Genes in Salmonella Isolates from Food Production Environments and Clinical Sources in the Middle East: A Systematic Review and Meta-Analysis Revealing the Limited Comparative Genomic Evidence.Life (Basel, Switzerland) · 2026Review
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- Development of the Gut Microbial Immune and Epithelial Cellular System (GutMICS) to Investigate the Immunological Role of Gut Anaerobes.Biotechnology and bioengineering · 2025Article
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- Drug resistance and genotyping studies ofFrontiers in veterinary science · 2025Article
- Phenotypic and WGS-derived antibiotic resistance patterns ofFrontiers in microbiology · 2025Article
- High carriage and possible hidden spread of multidrug-resistant Salmonella among asymptomatic workers in Yulin, China.Nature communications · 2024Article
- Persistence ofPathogens (Basel, Switzerland) · 2024Article
- Dissemination of Ceftriaxone-ResistantAntibiotics (Basel, Switzerland) · 2024Article
- Prevalence and antimicrobial susceptibility of Salmonella enteritidis and Salmonella typhimurium isolated from hen eggs and quail eggs in Karaj, Iran.Veterinary medicine and science · 2024Article
- Ecological prevalence, genetic diversity, and multidrug resistance of Salmonella enteritidis recovered from broiler and layer chicken farms.Poultry science · 2024Article
- The emergence of carbapenem-resistance and New Delhi metallo-β-lactamase-1 (Iranian journal of microbiology · 2024Article
- A Food Poisoning Caused byInfection and drug resistance · 2024Article
- Virulence and Antimicrobial-Resistant Gene Profiles ofInternational journal of microbiology · 2024Article
- Transcriptomic analysis using RNA sequencing and phenotypic analysis ofFrontiers in microbiology · 2024Article
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4 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundSalmonella enterica serovar Enteritidis (S. Enteritidis) is one of the most common serovars, associated with human salmonellosis. The food-borne outbreak of this bacterium is mainly related to the consumption of contaminated poultry meat and poultry products, including eggs. Therefore, rapid and accurate detection, besides investigation of virulence characteristics and antimicrobial resistance profiles of S. Enteritidis in poultry and poultry egg samples is essential. A total of 3125 samples (2250 poultry and 875 poultry egg samples), sent to the administrative centers of veterinary microbiology laboratories in six provinces of Iran, were examined for Salmonella contamination, according to the ISO 6579 guideline. Next, duplex PCR was conducted on 250 presumptive Salmonella isolates to detect invA gene for identification of the genus Salmonella and sdf gene for identification of S. Enteritidis. Subsequently, the S. Enteritidis isolates were examined for detection of important virulence genes (pagC, cdtB, msgA, spaN, tolC, lpfC, and spvC) and determination of antibiotic resistance patterns against nalidixic acid, trimethoprim-sulfamethoxazole, cephalothin, ceftazidime, colistin sulfate, and kanamycin by the disk diffusion method.
resultsOverall, 8.7 and 2.3% of poultry samples and 6.3 and 1.3% of eggs were contaminated with Salmonella species and S. Enteritidis, respectively. The invA and msgA genes (100%) and cdtB gene (6.3%) had the highest and the lowest prevalence rates in S. Enteritidis isolates. The spvC gene, which is mainly located on the Salmonella virulence plasmid, was detected in 50.8% of S. Enteritidis isolates. The S. Enteritidis isolates showed the highest and the lowest resistance to nalidixic acid (87.3%) and ceftazidime (11.1%), respectively. Unfortunately, 27.0% of S. Enteritidis isolates were multidrug-resistant (MDR).
conclusionThe rate of contamination with Salmonella in the poultry and egg samples, besides the presence of antimicrobial resistant and MDR Salmonella isolates harboring the virulence genes in these samples, could significantly affect food safety and subsequently, human health. Therefore, continuous monitoring of animal-source foods, enhancement of poultry farm control measures, and limiting the use of antibiotics for prophylactic purposes in food producing animals, are essential for reducing the zoonotic risk of this foodborne pathogen for consumers and also choosing effective antibiotics for the treatment of salmonellosis.
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