Background: Japanese 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.
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.
Conclusions: Surveillance of JEV and mosquito dissemination is recommended.
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http://dx.doi.org/10.1186/s13071-018-3285-7 | DOI Listing |
J Neurol Sci
January 2025
Department of Pediatrics, Kobe University Graduate School of Medicine, Hyogo, Japan.
Background: Acute encephalopathy is a severe condition predominantly affecting children with viral infections. The purpose of this study was to elucidate the epidemiology, treatment, and management of acute encephalopathy. The study also aimed to understand how the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has affected epidemiological trends.
View Article and Find Full Text PDFPLoS Pathog
January 2025
Department of Animal, Dairy, and Veterinary Sciences, College of Agriculture and Applied Sciences, Utah State University, Logan, Utah, United States of America.
Japanese encephalitis virus (JEV), a neuroinvasive and neurovirulent orthoflavivirus, can be prevented in humans with the SA14-14-2 vaccine, a live-attenuated version derived from the wild-type SA14 strain. To determine the viral factors responsible for the differences in pathogenicity between SA14 and SA14-14-2, we initially established a reverse genetics system that includes a pair of full-length infectious cDNAs for both strains. Using this cDNA pair, we then systematically exchanged genomic regions between SA14 and SA14-14-2 to generate 20 chimeric viruses and evaluated their replication capability in cell culture and their pathogenic potential in mice.
View Article and Find Full Text PDFAnimals (Basel)
December 2024
College of Veterinary Medicine, Hebei Agricultural University, Baoding 071000, China.
Japanese encephalitis virus (JEV) is regarded as an emerging and reemerging pathogen that is a primary cause of viral encephalitis in humans. However, there is a scarcity of research on the prevalence of JEV genotypes across the different mosquito species in Shanghai. In this study, the diversity of mosquito species and prevalence of JEV in pig and sheep farms in Shanghai were surveyed in 2022.
View Article and Find Full Text PDFFront Microbiol
December 2024
School of Basic Medical Sciences, Health Science Center, Ningbo University, Ningbo, China.
Introduction: Japanese encephalitis virus (JEV) and Zika virus (ZIKV) are prevalent in over 80 countries or territories worldwide, causing hundreds of thousands of cases annually. But currently there is a lack of specific antiviral agents and effective vaccines.
Methods: In the present study, to identify human neutralizing monoclonal antibody (mAb) against JEV or/and ZIKV, we isolated ZIKV-E protein-binding B cells from the peripheral venous blood of a healthy volunteer who had received the JEV live-attenuated vaccine and performed 10× Genomics transcriptome sequencing and BCR sequencing analysis, we then obtained the V region amino acid sequences of a novel mAb LZY3412.
Arch Virol
January 2025
Division of Veterinary Public Health, ICAR- Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, India.
Japanese encephalitis virus (JEV) is the leading cause of viral encephalitis in the Asia-Pacific region. Amplification of JEV in pigs is a potent driver for spillover of the infection to humans, and hence monitoring of virus dynamics in pigs can provide insights into JEV ecology. To study the dynamics of natural JEV infection in a tropical region, two groups of immunologically naïve pigs consisting of six animals per group were kept as sentinels on two different farms in the district of Thanjavur, Tamil Nadu, India.
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