African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5210

Full Length Research Paper

Incidence and antibiotic susceptibilities of Yersinia enterocolitica and other Yersinia species recovered from meat and chicken in Tehran, Iran

Sharifi Yazdi M. K.1,2, Soltan-Dallal M. M.3,4, Zali M. R.5 Avadisians S.3 and Bakhtiari R.3*
1Department of Medical Laboratory Sciences, School of Paramedicine, Tehran University of Medical Sciences. Tehran, Iran. 2Zonotic research centre. Tehran University of Medical Sciences, Tehran, Iran. 3Division of Microbiology,  Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. 4Antibiotic resistant research center, Tehran University of Medical Sciences, Tehran, Iran. 5National Research Department of Foodborne Diseases (NRDFD), Research Center of Gastroenterology and Liver Diseases, Shaheed Beheshti University of Medical Sciences, Tehran, Iran.
Email: [email protected]

  •  Accepted: 15 July 2011
  •  Published: 16 September 2011


The objective of this study is to investigate the prevalence and determine the antimicrobial susceptibility pattern of Yersinia species in beef meat and chicken meat samples in different seasons. In this study 379 pieces of beef and chicken meats were examined for the presence of Yersinia species between April 2007 and March 2008. 25 g of homogenized food samples was pre-enriched in PBS then it was cultured on cefsulodin-irgasan-novobiocin (CIN) agar. Susceptibility testing of bacterial strains was performed at 28ËšC by the agar diffusion method. Yersinia spp. was isolated from 60 of 379 (15.8%) beef meat and chicken meat samples. Y. entrocolitica was found in 48 of 60 (80%) positive samples. The rate of other 3 Yersinia spp, YferederikseniiYintermediaYkristensenii, were 7(11%), 4(6%) and1 (0.01%) out of 60 isolates, respectively. 98% of isolates were susceptible to choloramphenicol and gentamicin. The most antibiotic resistance belongs to cephalothine (98%). Our results showed that isolation ratio of Y. enterocolitica and the other species is higher in cold climates. The majority of isolates were resistant to cephalothine. The most active pharmacologic agents were chloramphenicol, gentamicin and trimetoprim.


Key words: Yersinia enterocolitica, antimicrobial susceptibility, beef meat, chicken.