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Genetically Similar Isolates of Salmonella enterica Serotype Enteritidis Persistent in China for a Long‐Term Period
Author(s) -
Song Qifa,
Shen Xuanyi,
Yang Yuanbin,
Zhang Danyang,
Gao Hong
Publication year - 2016
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/1750-3841.13339
Subject(s) - serotype , salmonella enteritidis , salmonella enterica , biology , microbiology and biotechnology , period (music) , salmonella , virology , china , term (time) , bacteria , genetics , geography , physics , archaeology , quantum mechanics , acoustics
Salmonella enterica serotype Enteritidis ( S . Enteritidis) is an important causative agent of nontyphoidal salmonellosis in human populations. In this study, we collected 72 S . Enteritidis strains from 2004 to 2014 in Ningbo, mid‐east China. Of the 72 strains, we identified a dominant clone of 58 strains recovered from patient's feces ( n = 48), blood ( n = 1), pleural effusion ( n = 1), chickens ( n = 3), and dessert cakes ( n = 5) by pulsed‐field gel electrophoresis (PFGE) and variable‐number of tandem repeat analysis (MLVA). The profile arrangements of MLVA were SE1‐SE2‐SE3‐SE5‐SE6‐SE8‐SE9: 4‐4‐3‐11‐10‐1‐3. These dominant strains were susceptible to ampicillin, chloramphenicol, tetracycline, ciprofloxacin, gentamicin, cefotaxime and trimethoprim–sulfamethoxazole, and resistant to nalidixic acid. Additionally, all isolates harboured virulence genes invA , sipA , sopE , and spvB when tested by PCR. Our results reveal that genetically similar S . Enteritidis strains which accounted for several outbreaks as well as blood infection and pleural cavity infection are prevalent in China for a long‐term period. This situation calls for further attention in the prevention and control of foodborne disease caused by Salmonella species.