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Shift in Japanese encephalitis virus (JEV) genotype circulating in northern Vietnam: implications for frequent introductions of JEV from Southeast Asia to East Asia
Abstract
This study analyses the evolutionary relatedness of 16 Japanese encephalitis virus (JEV) isolates (nine from Vietnam and seven from Japan) to previously published JEV strains using E gene sequence data. Vietnamese and Japanese strains isolated between 1986 and 1990 were found to cluster in genotype 3. However, more recent Vietnamese and Japanese strains isolated between 1995 and 2002 grouped within genotype 1, now a dominant though previously unreported genotype in Vietnam. In addition, in this study, strains isolated between 1995 and 2002 were more closely related to those isolated in the 1990s than to the older genotype 1 strains. Recently, the introduction of JEV genotype 1 into Japan and Korea has also been reported. Hence this genotype shift phenomenon may be occurring throughout all East Asia. Further studies on JEV ecology are needed to clarify the mechanism of JEV genotype 1 spread to new territories.
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Cites
Lanciotti, R. S., Roehrig, J. T., Deubel, V., Smith, J., Parker, M., Steele, K., Crise, B., Volpe, K. E., Crabtree, M. B., Scherret, J. H., et al. (1999) · Science · doi:10.1126/science.286.5448.2333 · Cited by 1,593
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Mackenzie, J. S., Gubler, D. J., & Petersen, L. R. (2004) · Nature Medicine · doi:10.1038/nm1144 · Cited by 1,314
Metadata
- Authors
- Nga, P. T., Parquet, M. D. C., Cuong, V. D., Ma, S.-P., Hasebe, F., Inoue, S., Makino, Y., Takagi, M., Nam, V. S., & Morita, K.
- Venue
- Journal of General Virology
- Publisher
- Microbiology Society
- Published
- 2004-06-01
- Volume
- 85
- Issue
- 6
- Pages
- 1625-1631
- ISSN
- 0022-1317 (ISSN-L)
- 1465-2099
- OpenAlex
- W2114817968
- Cited by
- 169
- References
- 1
- FWCI
- 5.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Shift in Japanese encephalitis virus (JEV) genotype circulating in northern Vietnam: implications for frequent introductions of JEV from Southeast Asia to East Asia. https://app.cochat.ai/papers/10.1099/vir.0.79797-0
- The paper
- Nga, P. T., Parquet, M. D. C., Cuong, V. D., Ma, S.-P., Hasebe, F., Inoue, S., Makino, Y., Takagi, M., Nam, V. S., & Morita, K. (2004). Shift in Japanese encephalitis virus (JEV) genotype circulating in northern Vietnam: implications for frequent introductions of JEV from Southeast Asia to East Asia. Journal of General Virology. https://doi.org/10.1099/vir.0.79797-0
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.