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在坦桑尼亚东北部南巴雷地区,从1956年到1959年使用狄氏剂滞留喷洒后,整个地区疟疾已明显减少。本文是停止喷洒后20年的观察结果。在南巴雷的公路旁和疟疾更严重的沼泽地区的二个原来调查村庄进行昆虫学和疟疾调查。每个村各选10间房屋采用除虫菊喷洒捕蚊。在沼泽区和公路旁村庄内冈比亚按蚊人房平均密度分别为20.7和14.0,致死按蚊密度为10.2和4.2;二种媒介的子孢子率分别为0.19%和0.32%。其结果已恢复
In the region of South Barre, northeast of Tanzania, malaria has been significantly reduced throughout the region after drencher shelter spraying was used from 1956 to 1959. This article is an observation of 20 years after stopping spraying. An entomological and malaria survey was conducted in two former surveyed villages along the road in South Barre and marsh areas more malaria-prone. Each village choose 10 houses using pyrethrin spray mosquito. The average density of Anopheles gambiae in the swampy areas and roadside villages was 20.7 and 14.0, respectively, and the density of Anopheles stephensi was 10.2 and 4.2. The sporozoites of the two vectors were 0.19% and 0.32% respectively. The result has been restored