关键词: 登革热, 流行性乙型脑炎, 媒介, 监测, 综合防制

Abstract: Objective To carry out the epidemiological surveillance of dengue fever(DF) and Japanese B encephalitis(JBE),and provide effective integrated control strategy in army region of Chaozhou. The result may provide guidance for arbovirus control. Methods Investigation on breeding sites and population density of adult mosquitoes was made by random and systematic sampling methods in army region of Chaozhou where DF once happened in March-December from 1997 to 2000. C6/36 cell isolation combined with RT-PCR were used to detect virus of DEN and JBE in the sera of unexplained feverish patients and the mosquitoes pools. The IFAT was used to detect antibody of the healthy mass for DEN and JBE. The integrated control measures was made,including to inculcate knowledge about preventing disease and to apply different control methods on different kinds of breeding ground and habitats. Results The virus of DEN and JBE were not found through C6/36 cell isolation from both the sera of unexplained feverish patients and the mosquito pools. As for seroepidemiology,antibody level of the healthy mass for DEN and JBE was not high on the whole (≤4.4% ) and dengue antibody level was decreasing with time. But,as for vector mosquito,there were four species in the investigated region. Aedes albopictus and Culex pipiens pallens were the dominant species. The Aedes albopictus container index(CI) was 24.1 and the breteau index(BI) 30 before treatment,Which was highly above the effective control limit which was 5. Conclusion The epidemiological surveillance indicated that there was vector mosquito of DEN and JBE and Aedes albopictus density was higher in army distrct of Chaozhou. Controlling mosquitoes and keep the environment clean should be an effective method to prevent DEN and JBE in the region.