Abstract
BackgroundJapanese encephalitis has become a public health threat in Indonesia. Three genotypes have been recorded in Indonesia, i.e. genotype II (GII), genotype III (GIII) and genotype IV (GIV). Genotype I (GI) and genotype V (GV) have never been reported in Indonesia.ResultsA Japanese encephalitis virus (JEV) belonging to the genotype I-a (GI-a) has been isolated for the first time from a Culex gelidus mosquito in the Province of Jambi, Indonesia. This virus is related to a 1983 isolate from Thailand whereas the infected Cx. gelidus mosquito belonged to a Chinese haplotype.ConclusionsSurveillance of JEV and mosquito dissemination is recommended.
Highlights
Japanese encephalitis has become a public health threat in Indonesia
The gene E phylogenetic analysis (Fig. 3) indicated that Japanese encephalitis (JE)/mosq/ Jambi107/2017 belonged to the clade Genotype I (GI)-a of Japanese encephalitis virus (JEV) and was closely related to a genotype I-a isolate from Thailand (GenBank: KF192510.1)
The clade GI-a is found in Thailand and Cambodia from where one case was introduced to Australia [3, 4]
Summary
Japanese encephalitis has become a public health threat in Indonesia. Results: A Japanese encephalitis virus (JEV) belonging to the genotype I-a (GI-a) has been isolated for the first time from a Culex gelidus mosquito in the Province of Jambi, Indonesia. This virus is related to a 1983 isolate from Thailand whereas the infected Cx. gelidus mosquito belonged to a Chinese haplotype. The Japanese encephalitis virus (JEV) is a mosquito-borne flavivirus that has become a public health threat in Asia, including Indonesia. In Indonesia, JEV was first isolated from mosquitoes in West Java in 1972. JEV originated from the IndoMalayan region and further evolved into five genotypes.
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