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目的了解玉溪市中心城区白纹伊蚊分布情况,为防控登革热提供科学依据。方法 2015年8月在玉溪市中心城区的东、西、南、北、中5个方位的居民区和特殊场所室内外积水容器中捕获蚊幼虫,在特殊场所采用人工诱捕法和全捕法捕获成蚊;对白纹伊蚊成蚊进行登革热病毒(DENV)特异核酸检测。结果城北的3个村及城西1个居民区均监测到白纹伊蚊,总容器指数(CI)为0.37;城东、城南和城中均未发现白纹伊蚊;在城北及城西的废旧轮胎加工厂和废品收购站人工捕获成蚊7种共2 193只,白纹伊蚊占总捕获数的82.44%(1 808/2 193),蚊幼虫CI为5.21,北城废旧轮胎加工厂布雷图指数高达60.00;白纹伊蚊成蚊未检出DENV特异性核酸。结论玉溪市中心城区首次监测到白纹伊蚊且密度较高,存在登革热传播及流行的风险,应引起高度关注。
Objective To understand the distribution of Aedes albopictus in downtown Yuxi and provide a scientific basis for preventing and controlling dengue fever. Methods In August 2015, mosquito larvae were captured in indoor and outdoor water storage containers in five orientations of East, West, South, North and Central of Yuxi city center, and artificial trapping and catching at special places Capture adult mosquitoes; Dengue virus (DENV) specific nucleic acid detection of Aedes albopictus. Results Aedes albopictus was detected in three villages in the north of the city and one residential area in the west of the city. The total container index (CI) was 0.37. No Aedes albopictus was found in the east, south and the city; A total of 2 193 artificially captured adult mosquitoes were collected from processing factories and waste collection stations, with 82.44% (1808/2193) of the total number of captured A. albopictus and 5.21 mosquito larvae. The Bradley index of Beicheng discarded tire factory Up to 60.00; DENV-specific nucleic acids were not detected in Aedes albopictus. Conclusion It is the first time that the population of Aedes albopictus is detected in the central urban area of Yuxi City, and the density is high. There is a risk of dengue spread and epidemic, which should be highly concerned.