ArticleParasites & vectors2025
Evaluation of vector competence of Culex tritaeniorhynchus and Culex pipiens pallens for Japanese encephalitis virus genotype III and V.
Article in Parasites & vectors, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Surveillance Results of Japanese Encephalitis Vector Mosquitoes in the Republic of Korea in 2025.Public health weekly report · 2026Article
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4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundJapanese encephalitis virus (JEV) is a major mosquito-borne pathogen, primarily transmitted by Culex tritaeniorhynchus in rural regions. In the Republic of Korea (ROK), genotype V (GV) has become the dominant JEV strain since 2010, raising suspicion about the vector competence of urban mosquitoes like Culex pipiens pallens.
methodsThis study evaluated the vector competence of Cx. tritaeniorhynchus and Cx. pipiens pallens for JEV GIII and GV under laboratory conditions. Mosquitoes were orally infected, and the infection rate (IR), dissemination rate (DR), and transmission rate (TR) were assessed at days 7 and 14 post-infection.
resultsCulex tritaeniorhynchus showed consistently high IR, DR, and TR for both genotypes, with over 95% of mosquitoes infected and actively transmitting the virus. In contrast, Cx. pipiens pallens exhibited a markedly lower IR, ranging from 23.1 to 39.2%; however, among infected mosquitoes, DR and TR were comparatively high. Viral load and titers were also markedly higher in Cx. tritaeniorhynchus than in Cx. pipiens pallens, particularly in the head-thorax and salivation samples.
conclusionsThese findings confirm that Cx. tritaeniorhynchus is a highly competent vector for JEV GIII and GV and suggest that Cx. pipiens pallens may play a notable role in the transmission of Japanese encephalitis virus in urban areas. This study emphasizes the importance of targeted vector surveillance and control strategies for multiple mosquito species, especially given the recent urbanization of JE cases in the ROK.
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