揭阳口岸登革热媒介密度及与气候因素相关分析

目的了解揭阳口岸登革热媒介伊蚊密度与季节消长及其与气候变化的关系,为防控提供科学依据。方法采用人工小时法和集卵器法调查蚊虫密度,应用SPSS分析季节和气候变化与蚊虫密度的关系。结果 2008-2010年每年5-10月份白纹伊蚊月平均密度为2～29.8只/人工小时;诱卵阳性指数为13.3～86.7;伊蚊密度与诱蚊指数存在正线性相关关系,伊蚊密度与月平均气温及前2个月降雨量呈正线性相关。结论揭阳口岸白纹伊蚊密度较高,与月平均气温有正线性相关,月降雨量对蚊虫密度有滞后正效性关系。

Analysis on correlation between the density of dengue fever vector and climatic factors at Jieyang port

Objective To survey the density of dengue fever vector and its seasonal fluctuation,and analyze the correlation between mosquito density and climatic factors so as to provide scientific evidence for monitoring and preventing dengue fever at Jieyang port.Methods The human baited captured and ovitrap methods for mosquitoes density survey,and the relationship between mosquito surveillance data and climate variables from 2008 to 2010 were analyzed by SPSS 13.0.Results The mean densities of Aedes albopictus were from 2 to 29.8 pieces per hour during May to October in 2008-2010,and the ovitrap index were from 13.3 to 86.7.There was a positive correlation between the mean densities of Aedes albopictus adult and ovitrap index（P=0.041）,and between the densities of mosquito and the monthly mean temperature,and pre-2-month precipitation.Conclusion The density of Aedes albopictus is at a high level at Jieyang port,and is affected by temperature and pre-2-month precipitation.