JOURNAL ARTICLE

Molecular epidemiology of rabies in Thailand

N Ito, M Sugiyama, K Oraveerakul, P Piyaviriyakul, B Lumlertdacha, Y T Arai, Y Tamura, Y Mori, N Minamoto
Microbiology and Immunology 1999, 43 (6): 551-9
10480551
For the purpose of making clear the dynamics of rabies viruses that are prevalent among dogs in Asia, especially Thailand, nucleoprotein (N) genes of isolates derived from Thailand were partially sequenced, and a phylogenetic analysis was performed on the basis of the sequencing data. Firstly, all 27 isolates from Thailand belonged to one group that was distantly related to an isolate from China and was separated into at least six lineages. On the other hand, the isolate from Japan was related to viruses from the Arctic. Secondly, in order to analyze the diversity of the N gene more conveniently, restriction fragment length polymorphism (RFLP) analysis was performed on the N gene of 27 isolates from Thailand. The RFLP analysis could distinguish the lineages of each isolate, and the lineages of additional 34 isolates were deduced by this method. On examination of the geographical distribution of the six lineages, based on the results of phylogenetic and RFLP analyses, it was clear that infection cycles of the rabies virus in Thailand have tended to be maintained endemically.

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