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用化学药物来杀灭媒蚊,是防治疟疾、乙脑、丝虫、黄热病和登革热等疾病的重要措施之一。由于地域使用杀虫药的品种、剂量和施药面积日有所增,致使包括媒蚊在内的昆虫,对杀虫药物的抗性程度也在提高,尤其是常年使用一种或多种杀虫药而引起的高抗性或交叉抗性,给上述诸疾病的防治、增加了困难。又因媒蚊抗性的程度,受到地域、药物的品种、剂量以及媒蚊产生的交叉抗性等差异,作为某地域测定当地媒蚊对不同杀虫药物的半数效量
The use of chemical drugs to kill mosquitoes is one of the important measures to prevent malaria, JE, filarial, yellow fever and dengue and other diseases. Insects, including mosquitoes, are also increasing their resistance to insecticides due to the increasing variety of insecticides used, the increasing dosage and application area, and the increasing use of one or more pesticides Insecticides caused by high resistance or cross-resistance, to the prevention and treatment of these diseases, increasing the difficulty. Because of the degree of resistance of mosquitoes, by the region, the variety of drugs, cross-resistance and dose of mosquitoes and other differences as a regional determination of the local mosquito half insecticidal effect of different drugs