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June 2, 2014


Vibrio parahaemolyticus in Shrimp at Retail Markets


From Abstract: Vibrio parahaemolyticus, the cause of EMS/APHND, is one of the most common foodborne pathogens in Asian countries.  V. parahaemolyticus contamination of retail shrimp in China has been reported and linked to outbreaks of foodborne diseases; however, to date, the prevalence of V. parahaemolyticus in retail shrimp in China has not been determined.  This study identifies the prevalence of V. parahaemolyticus in shrimp in Chinese retail markets.  From May 2012 to April 2013, 273 shrimp samples were obtained from retail markets in 16 provinces (19 cities) of China.  V. parahaemolyticus was detected in 103 (37.7%) of 273 samples by the most probable number method.  Bacterial densities were less than 100 MPN/g in 95.1% (98/103) of the samples.  Five tdh (thyrotropin-releasing hormone)-positive isolates were identified from 247 isolates, and none of the isolates were tdh-positive.  In multiplex PCR-based O-antigen serotyping of these 247 pathogenic isolates, all O-antigen serotypes, except O9, were detected, and serotype O2 was found to be the most prevalent (detected in 82 isolates).


Source: Food Control.  Prevalence, Pathogenicity, and Serotypes of Vibrio parahaemolyticus in Shrimp from Chinese Retail Markets.  Xiaoke Xu, Qingping Wu (email, State Key Laboratory of Applied Microbiology in Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, No. 100 Central Xianlie Road, Guangzhou 510070, China, phone/fax +86 20 87688132), Jumei Zhang, Jianheng Cheng, Shuhong Zhang and Kui Wu.  Volume 46, Pages 81-85, December 2014 [The “2014” is probably a typo].

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