Publication: Detection of new genotypes of Orientia tsutsugamushi infecting humans in Thailand
Issued Date
2008-01-01
Resource Type
ISSN
14690691
1198743X
1198743X
Other identifier(s)
2-s2.0-38049052354
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Mahidol University
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SCOPUS
Bibliographic Citation
Clinical Microbiology and Infection. Vol.14, No.2 (2008), 168-173
Suggested Citation
P. E. Fournier, S. Siritantikorn, J. M. Rolain, Y. Suputtamongkol, S. Hoontrakul, S. Charoenwat, K. Losuwanaluk, Philippe Parola, D. Raoult Detection of new genotypes of Orientia tsutsugamushi infecting humans in Thailand. Clinical Microbiology and Infection. Vol.14, No.2 (2008), 168-173. doi:10.1111/j.1469-0691.2007.01889.x Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/19835
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Title
Detection of new genotypes of Orientia tsutsugamushi infecting humans in Thailand
Abstract
PCR screening of blood specimens taken from 195 patients with serologically confirmed scrub typhus in three Thai provinces detected the 56-kDa protein-encoding gene from Orientia tsutsugamushi in ten (5%) patients. Significant genetic diversity was found among the ten amplicons, with nine new genotypes identified that were different from those found previously in Thailand. Phylogenetically, the ten sequences obtained in the present study and sequences from 71 strains characterised previously were distributed into several clusters that included the Karp, Gilliam, Kuroki, Saitama, Kawasaki and Kato clusters. Two of the new genotypes found in the present study clearly belonged to the Karp cluster. However, the other new genotypes formed three different clusters, including one cluster that appeared to be distant from all previously known clusters, and which may therefore be representative of a previously undescribed serotype. Other genotypes formed two other clusters that may also be associated with undescribed serotypes. © 2007 The Authors Journal Compilation © 2007 European Society of Clinical Microbiology and Infectious Diseases.