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KMID : 1143420200130282059
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Public Health Weekly Report
2020 Volume.13 No. 28 p.2059 ~ p.2070
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Monitoring of Population Density of the Japanese Encephalitis Vector, Culex tritaeniorhynchus (Diptera: Culicidae) in Korea, 2019
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Jang Chang-Won
Kim Hyun-Woo
Lee Wook-Gyo
Lee Hee-Il
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Abstract
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To monitor the Japanese encephalitis (JE) vector mosquito population in Korea, this study collected mosquitoes at cowsheds with black light traps twice a week from April to October, 2019 at ten sites nationwide (Busan, Gyeonggi, Gangwon, Chungbuk, Chungnam, Jeonbuk, Jeonnam, Gyeongbuk, Gyeongnam, Jeju). The number of collected mosquitoes was identified and calculated as a trap index (TI) of mosquitoes / trap / night. The total number of mosquitoes collected was 453,136 individuals including seventeen species belonging to seven genera. According to the results, Aedes vexans nipponii (277,906 mosquitoes, 61.3%) was the dominant species, followed by Anopheles spp. (125,481 mosquitoes, 27.7%) and Culex tritaeniorhynchus (35,491 mosquitoes, 7.8%). The population density of Cx. tritaeniorhynchus was highest in the Gyeongnam (Jinju City) area (TI 11,109) and lowest in the Gyeonggi (Suwon City) area (TI 3). Cx. tritaeniorhynchus was first collected on April 2nd week, 2019 in the Jeju Island (Jeju City) area. On July 2nd week, 2019, more than 500 mosquitoes were collected and since 50% of the total mosquito density collected were Japanese encephalitis mosquitoes, an advisory was issued. The results of this study were posted on the Korea Center for Disease Control and Prevention (KCDC) website (http://www.cdc.go.kr) to help in the prevention and control of Japanese encephalitis.
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KEYWORD
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Japanese encephalitis, Culex tritaeniorhynchus, Mosquito
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