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Updated: Mar 24, 2026

An Allelotyping PCR for Identifying Salmonella enterica serovars Enteritidis, Hadar, Heidelberg, and Typhimurium
Published on: July 22, 2011
Microbial-resistant Salmonella enteritidis isolated from poultry samples
Saeedeh Ghazaey1, Mohammad Hossain Mirmomeni2
1Molecular pathology research center, Ghaem educational and research center, Mashhad university of medical science, Mashhad, Iran.
Multidrug resistance in Salmonella enteritidis is a global concern. This study found high resistance rates to common antibiotics like ampicillin and cephalothin in poultry-derived Salmonella enteritidis isolates.
Area of Science:
- Microbiology
- Food Safety
- Public Health
Background:
- Multidrug resistance in Salmonella enteritidis poses a significant global health challenge.
- Antimicrobial resistance necessitates ongoing surveillance and characterization of bacterial strains.
Purpose of the Study:
- To determine the antimicrobial resistance patterns of Salmonella enteritidis isolates.
- To assess the prevalence of resistance to key antibiotics in a specific strain.
Main Methods:
- Salmonella strains were isolated from poultry samples using biochemical tests.
- Polymerase Chain Reaction (PCR) with sdfI gene-specific primers was employed for identification.
- Antimicrobial susceptibility testing was performed on identified isolates.
Main Results:
- 100% of Salmonella enteritidis isolates exhibited resistance to ampicillin.
- 90% of isolates were resistant to cephalothin and streptomycin.
- Significant resistance was also observed for cefotaxime (70%), kanamycin (60%), and gentamicin (60%).
Conclusions:
- Salmonella enteritidis isolates demonstrate substantial antimicrobial resistance to commonly used antibiotics.
- The findings highlight the urgent need for strategies to combat multidrug resistance in this pathogen.
- Continued monitoring of antibiotic resistance in foodborne pathogens is crucial for public health protection.
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