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Iranian Journal of Microbiology، جلد ۵، شماره ۴، صفحات ۳۳۹-۳۴۴
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عنوان انگلیسی Conventional and molecular investigation of Shigella isolates in relation to an outbreak in the area of Isfahan, Iran.
چکیده انگلیسی مقاله Background and Objective: Over 165 million cases of shigellosis occur in the world each year, mostly in developing countries. Outbreaks of shigellosis are associated with poor sanitation, natural calamities, contaminated food and crowded living conditions. In late summer 2006, during the final stage of an outbreak of shigellosis at a vast region of Isfahan province, Naein & Ardestan, our laboratory was assigned to investigate the outbreak in order to determine the causative agent. Materials and Methods: A total of 146 rectal swabs which had been collected from the patients by local laboratories on separate days were screened using a battery of conventional and molecular tests. Results: Thirteen specimens tested positive for Shigella spp. They were identified as S. sonnei (6, 46.1%), S. dysenteriae (4,30.8%), S. flexneri (2, 15.4%) and Shigella spp (1, 7.7%) by conventional and molecular microbiological tests. According to ribotyping results the isolates were grouped into 3 distinct clusters encompassing the majority of isolates and a single line of descent representing isolate S122 which was nonreactive with any Shigella polyvalent antisera. Conclusion: This diarrheal outbreak appeared to be the result of shigellosis. Despite the fact that Shigella sonnei was the predominant organism isolated from patients, the causative agent of outbreak diarrhea remains obscure, since other Shigella species were also involved. The serologic testing supports this conclusion, as do the molecular patterns of the Shigella isolates. Having considered the time of investigation which was in the late stage of the outbreak, it was very likely that a collection of endemic and epidemic clinical samples was screened resulting in isolation of various Shigella species.
کلیدواژه‌های انگلیسی مقاله Outbreak,Ribotyping,Shigella
نویسندگان مقاله رامین دیباج | ramin dibaj
infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (Isfahan university of medical sciences)

محمد مهدی اصلانی | mohammad mehdi aslani
department of microbiology, pasteur institute of iran, tehran, iran.

سازمان اصلی تایید شده: انستیتو پاستور ایران (Pasteur institute of iran)

پروین حیدریه | parvin heidarieh
department of microbiology, alborz university of medical sciences, karaj, iran.


عبدالرزاق هاشمی | abdolrazagh hashemi
department of epidemiology, pasteur institute of iran, tehran, iran.

سازمان اصلی تایید شده: انستیتو پاستور ایران (Pasteur institute of iran)

بهروز عطایی | behrooz ataei
infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (Isfahan university of medical sciences)

عباس دایی ناصر | abbas daei naser
infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (Isfahan university of medical sciences)

حسن شجاعی | hasan shojaei
infectious diseases and tropical medicine research center, isfahan university of medical sciences, isfahan, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (Isfahan university of medical sciences)

نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/511
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