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Molecular epidemiology of Japanese encephalitis virus circulating in South Korea, 1983-2005.


ABSTRACT: We sequenced the envelope (E) gene of 17 strains of the Japanese encephalitis virus (JEV) isolated in South Korea in 1983-2005 and compared the sequences with those from previously reported strains. Our results show the remarkable genetic stability of the E gene sequence in Korean JEV strains. Five pairs of E gene sequences from 10 Korean strains were identical, despite geographical differences and a maximum five-year time span. Sequence comparisons with other Asian strains revealed that the Korean strains are closely related to those from China, Japan, and Vietnam. Genotype 3 strains were predominant in Korea before 1993, when genotype 1 strain K93A07 was first isolated. The two genotypes were detected simultaneously in 1994 but since then, only genotype 1 has been isolated in South Korea. Thus, the genotype change occurred according to the year of isolation rather than the geographical origin.

SUBMITTER: Yun SM 

PROVIDER: S-EPMC2893154 | biostudies-literature | 2010

REPOSITORIES: biostudies-literature

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Molecular epidemiology of Japanese encephalitis virus circulating in South Korea, 1983-2005.

Yun Seok-Min SM   Cho Jung Eun JE   Ju Young-Ran YR   Kim Su Yeon SY   Ryou Jungsang J   Han Myung Guk MG   Choi Woo-Young WY   Jeong Young Eui YE  

Virology journal 20100614


We sequenced the envelope (E) gene of 17 strains of the Japanese encephalitis virus (JEV) isolated in South Korea in 1983-2005 and compared the sequences with those from previously reported strains. Our results show the remarkable genetic stability of the E gene sequence in Korean JEV strains. Five pairs of E gene sequences from 10 Korean strains were identical, despite geographical differences and a maximum five-year time span. Sequence comparisons with other Asian strains revealed that the Kor  ...[more]

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