Jpn. J. Infect. Dis., 65 (2), 171-174, 2012
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Le Hong Thuy Tien1, Naoya Sugiyama1, Kwanjit Duangsonk2, Prasit Tharavichitkul2, and Ro Osawa1,3*
1Department of Bioresource Science and 3Research Center for Food Safety and Security, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan; and 2Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
(Received November 28, 2011. Accepted January 14, 2012)
*Corresponding author: Mailing address: Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, Rokko-dai 1-1, Nada-ku, Kobe 657-8501, Japan. Tel & Fax: +81-788035804, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
SUMMARY: Twenty bacterial strains isolated from the blood of patients with suspected Streptococcus suis infection based on clinical symptoms in northern Thailand between 2009 and 2010 were subjected to phenotypic and genotypic identification. Commercial identification kits and a PCR-based assay targeting the S. suis-specific 16S rDNA sequence correctly identified S. suis isolated from patients in northern Thailand; however, there was a risk of misidentifying S. gallolyticus as S. suis using a PCR assay targeting the S. suis-specific house keeping gene encoding glutamate dehydrogenase. This is the first paper to report S. gallolyticus infection in humans in Thailand.