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2- Young Researchers Club Elite, Islamic Azad University, Shahrekord, Iran.
3- baqiyatallah university of medical sciences
4- young researchers and elite club karaj baranch
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.
Received: 2014/02/9 | Accepted: 2014/08/13 | ePublished: 2014/11/19
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