[Surveillance and pathogenic analysis on non-typhoidal Salmonella in Guangdong province, 2007].
OBJECTIVE
To understand non-typhoid Salmonella in diarrhea patients from Guangdong province in order to timely discover the outbreaks caused by them as well as to grasp the serotypes, antibiotic resistance and pulse-field gel electrophoresis (PFGE) types of those strains isolated from this surveillance program.


METHODS
Salmonella strains from diarrhea patients were detected and all the positive strains were tested by serum agglutination, antibiotic susceptibility and PFGE.


RESULTS
71 non-typhoid Salmonella strains were isolated from 1128 stool samples, with a positive rate of 6.29%. All the strains were divided into 29 serotypes, with Salmonella serotype enteritidis and typhimurium showing the most common serotypes. Most of the strains were sensitive to cephalosporins and quinolones. The antibiotic resistance rates of S. typhimurium were higher than S. enteritidis and S. stanley. Other than S. enteritidis, all the serotype strains did not have the same type of PFGE. 17 S. enteritidis strains digested by XbaI were divided to 8 PFGE types while the PFGE 4 type appeared the most common one. 12 S. enteritidis strains were typed again by SfiI and NotI, and there were still 3 groups of strains showing the same PFGE pattern.


CONCLUSIONS
Most of the infection caused by non-typhoidal Salmonella was sporadic in Guangdong province in 2007. Cephalosporins and quinolones seemed the best in curing the infection of non-typhoidal Salmonella at the clinics.
Ke
Bi-xia
BX
Guangdong Province Center for Disease Control and Prevention, Guangzhou 510300, China.
Deng
Xiao-ling
XL
Zhang
Li-hua
LH
Chen
Jia-lin
JL
Ke
Chang-wen
CW
Guo
Chuan
C
Cao
Hai-yan
HY
Lin
Wei
W
Tan
Hai-ling
HL
Li
Bo-sheng
BS
D002681:China / Q000453:epidemiology; D003967:Diarrhea / Q000453:epidemiology / Q000382:microbiology*; D005243:Feces / Q000382:microbiology*; D005260:Female; D006801:Humans; D008297:Male; D012475:Salmonella / Q000145:classification / Q000302:isolation & purification*; D012480:Salmonella Infections / Q000453:epidemiology*; D018571:Sentinel Surveillance; D012703:Serotyping