year 8, Issue 3 (Fall 2014)                   Iran J Med Microbiol 2014, 8(3): 31-37 | Back to browse issues page

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Rahimi E, Safarpourdehkordi F, Yahaghi E, Khodaverdi E. Prevalence and Antimicrobial Resistance of Listeria Species Isolated from Smoked and Salted Fish. Iran J Med Microbiol. 2014; 8 (3) :31-37
1- Department of Food Hygiene, Faculty of Veterinary Medicine, Islamic Azad University, Shahrekord, Iran. ,
2- Young Researchers Club Elite, Islamic Azad University, Shahrekord, Iran.
3- baqiyatallah university of medical sciences
4- young researchers and elite club karaj baranch
Abstract:   (12389 Views)

Background and Aim: Listeriosis is one of the most important food-borne diseases caused by Listeria species especially L. monocytogenes.  The objective of this study was to determine the prevalence and antimicrobial resistance of Listeria species isolated from smoked and salted fish in Isfahan and Bandar anzali.

Materials and Methods: From August 2009 to April 2011, a total of 120 samples of various smoked (n= 80) and salted Iranian fish (n= 40) were obtained from randomly selected retail stores in Isfahan and Bandaranzali cities and were evaluated for the presence of Listeria spp. using standard cultural and PCR methods. Then antibiogram tests were done for determination of antimicrobial resistance.

Results: 7 (8.8%) and 6 (15%) of smoked and salted fish samples were positive for Listeria spp. respectively. L. monocytogenes, L. innocua and L. seeligari were isolated from 2.5, 6.7 and 1.6% of fish samples. 9 of 13 Listeria isolates (69.2%) were resistant to one or more antimicrobial agents. Resistance to nalidixic acid (53.8%) and tetracycline (30.8%) were the most common finding.

Conclusions: The results of this study indicate the potential risk of infection with Listeria in people consuming raw or under cooked smoked and salted fish. Also, the results obtained in this study indicate the need for an appropriate strategy of surveillance and epidemiological monitoring to control the development of resistance.

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Type of Study: Original Research Article | Subject: Molecular Microbiology
Received: 2014/02/9 | Accepted: 2014/08/13 | ePublished: 2014/11/19

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