Epidemiological characteristics and molecular typing of Salmonella in Beijing from 2008 to 2009.
- Author:
Mei QU
1
;
Fang HUANG
;
Xin ZHANG
;
Dai-tao ZHANG
;
Gui-rong LIU
;
Zhi-Gang CUI
;
Han-qiu YAN
;
Yuan LIU
;
Zhan-ying HE
;
Xiang-feng DOU
;
Biao KAN
;
Quan-yi WANG
Author Information
- Publication Type:Journal Article
- MeSH: Adolescent; Adult; Bacterial Typing Techniques; China; epidemiology; DNA, Bacterial; isolation & purification; Electrophoresis, Gel, Pulsed-Field; Female; Food Microbiology; Humans; Male; Molecular Typing; Salmonella; classification; genetics; isolation & purification; Salmonella Infections; epidemiology; microbiology; Serotyping; Young Adult
- From: Chinese Journal of Preventive Medicine 2011;45(2):113-117
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the epidemiological characteristics and molecular phenotypes of Salmonella by pulsed-field gel electrophoresis (PFGE) in Beijing from 2008 to 2009.
METHODSA total of one hundred thirty-seven isolates recovered from the WHO Global Salmonella Surveillance system and entero clinic surveillance system were identified by biochemical tests and serotyping. The related epidemiological informations were also analyzed. The isolates were further typed by PFGE.
RESULTSThe prevalence of Salmonella from 2008 to 2009 showed obvious seasonal character. High incidence occurred from June to September, and 64.1% (84/131) isolates were recovered in this period. Patients of 18 - 40 year-old were 46.1% (58/128) and 80 patients were male and 40 patients were female with the ratio of 1.57:1. These 137 Salmonella isolates belonged to 20 serotypes, including Enteritidis (46.7%, 64/137) and Typhimurium (17.5%, 24/137) as the dominant serotype. In total, 71 PFGE profiles were identified. Four PFGE patterns of S. Enteritidis isolates (JEGX01.CN0001, JEGX01.CN0003, JEGX01.CN0002, JEGX01.CN0019) and S. Typhimurium pattern of JPXX01.CN0001 were dominant patterns.
CONCLUSIONThe prevalence of Salmonella from 2008 to 2009 showed distribution characteristics of sex, age and seasons. The numerous PFGE patterns of Salmonella showed diversity of these isolates and different clones existed in Beijing.
