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目的了解不同类型工地伊蚊孳生地的分布特点及其影响因素,为制定工地登革热媒介控制措施和策略提供科学依据。方法 2015年随机抽取12条街道,进行工地伊蚊密度横断面调查,计算容器指数(Container Index,CI),并评价蚊媒风险。结果海珠区共调查88个工地,平均容器指数M(P25,P75)为15(0,40),城乡结合地区显著高于城区(Z=40.06,P<0.001);闲置工地平均容器指数最高,小型工地则最低,大中型、小型和闲置工地间有显著性差异(Z=12.38,P=0.002);此外,蚊媒风险评估,工地达标率仅36.36%。结论海珠区工地伊蚊媒介密度较高,存在登革热爆发风险,因此,必须加强工地蚊媒控制,坚持卫生环境、清除孳生地和定期灭蚊等有效措施,才能有效防控登革热疫情。
Objective To understand the distribution and influencing factors of Aedes albopictus breeding grounds in different types of construction sites and provide a scientific basis for the formulation of control measures and strategies for dengue fever in construction sites. Methods Twelve streets were randomly selected in 2015 to conduct cross-sectional survey of Aedes albopictus density on the site to calculate the Container Index (CI) and to evaluate the mosquito vector risk. Results A total of 88 sites were surveyed in Haizhu District. The average container index M (P25, P75) was 15 (0, 40) and the urban-rural area was significantly higher than that of the urban area (Z = 40.06, P <0.001) There was a significant difference between small and medium sized sites, small and idle sites (Z = 12.38, P = 0.002). In addition, mosquito-borne risk assessment showed that the site compliance rate was only 36.36%. Conclusion The high density of Aedes albopictus in Haizhu district has risk of dengue fever. Therefore, it is necessary to strengthen effective measures such as mosquito control in site, adherence to hygienic environment, removal of breeding sites and regular mosquito control so as to effectively prevent and control dengue fever.