Abstract: Objective To investigate the emergence of Aedes albopictus in mosquito-positive small water containers in surveillance sites for dengue fever vector Aedes in Hebei province, China, and to provide scientific data for prevention and control of dengue vector Aedes. Methods Two villages were randomly sampled from the surveillance sites for dengue vector Aedes, one in Mancheng district in Baoding and the other in Yutian county in Tangshan. Four streets in different directions were selected to record mosquito breeding status and their larvae condition in all mosquito-positive small water containers inside and outside the rooms. The mosquito larvae were collected and taken back to the laboratory to be fed for observing and recording the emergence of Ae. albopictus, and analyses were performed on factors that may affect the emergence probability of Ae. albopictus. Results The positive rate of Ae. albopictus in mosquito-positive small water containers was 100% in peak seasons for Ae. albopictus activities in the surveillance sites for dengue vector Aedes in Hebei province, and the constituent ratio was 71.67% for containers containing Ae. albopictus larvae only. There were significant differences in the constituent ratio of mosquito-positive small water containers containing Ae. albopictus only between containers of different characteristics (P<0.05). The probability of larvae emergence into Ae. albopictus was 66.57% for larvae in mosquito-positive containers, but there were no significant differences in the probability of larvae emergence into adult Ae. albopictus between mosquito-positive water containers of different characteristics (P>0.05). Conclusion Aedes albopictus larvae breeding is observed in mosquito-positive water containers of different characteristics in the residential areas in Hebei province, which demonstrates equivalent infestation. Water containers of different characteristics in the pre-warning areas of dengue risk should be completely disposed. The Breteau index and the data on probability of larvae emergence into Ae. albopictus in mosquito-positive water containers can be referred to during prevention and control of dengue vector Aedes to comprehensively evaluate the risk of dengue vector-borne diseases.

Key words: Dengue, Vector, Water container, Aedes albopictus, Emergence probability

摘要： 目的 调查河北省登革热媒介伊蚊监测点蚊虫阳性小型积水容器中白纹伊蚊羽化情况，为登革热媒介伊蚊防控工作提供科学数据。方法 分别在保定市满城区和唐山市玉田县登革热媒介伊蚊监测点随机抽取1个村，按照不同方位选取4个街道，检查记录室内外所有蚊虫阳性小型积水容器及其幼蚊孳生情况，收集幼蚊带回实验室饲养观察并记录白纹伊蚊羽化情况，对可能影响白纹伊蚊羽化概率的因素进行分析。结果 河北省登革热媒介伊蚊监测点白纹伊蚊活动高峰季节蚊虫阳性小型积水容器中白纹伊蚊阳性率为100%，其中全部为白纹伊蚊幼虫的容器构成比为71.67%，不同类型特征间阳性小型积水容器中全部为白纹伊蚊的容器构成差异有统计学意义（P<0.05）；阳性容器幼蚊中白纹伊蚊羽化概率为66.57%，但是不同类型特征的阳性积水容器幼蚊羽化出白纹伊蚊成蚊的概率差异均无统计学意义（P>0.05）。结论 河北省居民区不同类型特征的蚊虫阳性积水容器中均会有白纹伊蚊幼虫孳生且具有相同的侵害性，对登革热风险预警区域内不同类型特征的积水容器应进行全面处理，登革热媒介伊蚊防控工作中可以参考布雷图指数和阳性积水容器的白纹伊蚊羽化概率数据综合评估登革热媒介传病风险。

关键词: 登革热, 媒介, 积水容器, 白纹伊蚊, 羽化率