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Volume 12, Number 8—August 2006
Research

Streptococcus suis Sequence Type 7 Outbreak, Sichuan, China

Changyun Ye*†1, Xiaoping Zhu‡, Huaiqi Jing*1, Huamao Du*1, Mariela Segura§1, Han Zheng*1, Biao Kan*, Lili Wang*, Xuemei Bai*, Yongyun Zhou*, Zhigang Cui*, Shouying Zhang*, Dong Jin*, Na Sun*, Xia Luo*, Ji Zhang*, Zhaolong Gong*, Xin Wang*, Lei Wang*, Hui Sun*, Zhenjun Li*, Qiangzheng Sun*, Honglu Liu¶, Boqing Dong#, Changwen Ke#, Hui Yuan**, Hua Wang††, Kecheng Tian‡‡, Yu Wang†, Marcelo Gottschalk§, and Jianguo Xu*†Comments to Author 
Author affiliations: *National Institute for Communicable Disease Control and Prevention, Beijing, People's Republic of China; †State Key Laboratory of Infectious Diseases Prevention and Control, Beijing, People's Republic of China; ‡Sichuan Provincial Center for Disease Control and Prevention, Chengdu, People's Republic of China; §Université de Montréal, Montreal, Quebec, Canada; ¶Guangxi Provincial Center for Disease Control and Prevention, Nanning, People's Republic of China; #Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, People's Republic of China; **Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, People's Republic of China; ††Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, People's Republic of China; ‡‡Guizhou Provincial Center for Disease Control and Prevention, Guiyang, People's Republic of China

Main Article

Figure 1

Figure 1. Pulsed-field gel electrophoresis (PFGE) profiles of selected isolates from various parts of China. All isolates of Streptococcus suis were digested with SmaI. The molecular size of each restriction fragment was calculated with the Comparative Quantification/Polymorphism analysis feature of the Molecular Analyst Fingerprinting Plus software (Quantity One version 4.0, Bio-Rad, Beijing, People's Republic of China) based on mobility of S. suis isolates on the same gel with Salmonella enterica serovar Braenderup H9812 digested with XbaI, as universal standard of PulseNet International. Clustering of PFGE patterns was performed by an unweighted paired group with arithmetic averaging (UPGMA). The dendrogram of PFGE patterns of isolates tested were drawn with PulseNet software BioNumerics, with a 1.5% position tolerance and 1% optimization.

Main Article

1These authors contributed equally to this study.

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