SMITH A, PARK P O, HOCKING K S
Bull World Health Organ. 1964;31(3):399-409.
As part of the World Health Organization's programme for the evaluation and testing of new insecticides, different types of dichlorvos dispenser were installed in experimental huts in Tanganyika for study of their effectiveness in killing Anopheles gambiae. It was found that satisfactorily high mosquito mortalities of 75% or more were maintained for one to two months after installation of a dispenser. Mortalities were about 10% higher in huts with grass roofs than in those with mud-lined roofs. The vapour toxicity was similar in the two types of hut, but the results of bio-assay tests on different types of surface showed that there was a residual contact effect of the insecticide as well as the fumigant effect; the lower mortalities in the mud-roofed huts may be due in part to removal or decomposition of the dichlorvos by the mud surface.Measurements of blood pseudo-cholinesterase levels in persons who slept in the experimental huts gave no indication that the dichlorvos had any harmful effect on them.
作为世界卫生组织新杀虫剂评估和测试计划的一部分,不同类型的敌敌畏喷洒器被安装在坦噶尼喀的实验小屋中,以研究其对冈比亚按蚊的杀灭效果。结果发现,安装喷洒器后一到两个月内,蚊子死亡率能令人满意地保持在75%或更高。茅草屋顶小屋中的死亡率比泥衬屋顶小屋中的死亡率高约10%。两种类型小屋中的蒸汽毒性相似,但对不同类型表面进行的生物测定测试结果表明,除熏蒸作用外,杀虫剂还有残留接触作用;泥屋顶小屋中死亡率较低可能部分是由于泥表面使敌敌畏去除或分解。对睡在实验小屋中的人员进行的血液假性胆碱酯酶水平测量结果表明,敌敌畏对他们没有任何有害影响。