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目的 探索有效地控制嗜人按蚊密度和降低疟疾发病率的措施。方法 选择自然条件、疟疾发病率、人口数基本相同的 3个区。各区在控制传染源的基础上 ,其中一区连续两年采用 2 .5 %溴氰菊酯 ( 15mg/m2 )浸帐灭蚊 ;另一区在浸帐同时对畜房、人群活动场所采用 5 %氯氰菊酯 ( 2 5mg/m2 )滞留喷洒灭蚊。各区观察病原学和昆虫学各项指标。结果 浸帐喷洒区人房、室外人帐诱、牛栏、猪栏等嗜人按蚊密度年平均分别下降 10 0 .0 0 %、71.96%、94.0 1%、67.42 % ;单一浸帐区除室外人诱密度上升 12 .3 8%外 ,其他场所依次下降 99.63 %、18.71%、69.44 %。嗜人按蚊叮人率浸帐喷洒区为 0 .1111,浸帐区为 0 .2 2 2 2 ,对照区为 1.1688。浸帐喷洒区、单一浸帐区、对照区疟疾发病率年平均分别下降73 .12 %、5 7.71%、65 .71%。结论 单一浸帐和浸帐喷洒灭蚊均能降低人房内嗜人按蚊密度 ,后者各场所密度比前者降低的快。
Objective To explore measures to effectively control the density of Anopheles anthropophagus and reduce the incidence of malaria. Methods Three conditions were selected: natural conditions, incidence of malaria and population. In each district, on the basis of controlling the source of infection, one of the districts used 2.5% deltamethrin (15mg / m2) for mosquito control for two years in a row; in the other district, Cypermethrin (25mg / m2) retention spraying mosquito. Various districts to observe the etiology and entomology indicators. Results The density of Anopheles anthropophagus in the paddy spray area decreased by 100.0%, 71.96%, 94.0% and 67.42% on an average respectively in the year before, The outdoor density increased by 12.38%, while other places decreased by 99.63%, 18.71% and 69.44% in turn. Antenna Anopheles bite rate of 0.9111 soaked spray area, dipped area was 0.2222, the control area was 1.1688. The average annual incidence of malaria in the area of paddy spraying, single dunking area and control area decreased by 73.12%, 5 7.71% and 65.71% respectively. Conclusion Single dip and dip spray mosquito control can reduce the density of Anopheles anthropophagus in the human body, the density of each place in the latter is lower than the former.