ISSN 1003-8280 CN 10-1522/R 中国疾病预防控制中心 主办
【Abstract】 Objective To know about the mosquito density in Beijing city and Olympic venues by questionnaire. Methods Seven districts and seven Olympic venues were chosen to implement questionnaire survey by stratified random sampling. Results According to survey in the indoor environment, 92.31% of the respondents thought there were only a few mosquitoes in Beijing city, and 96.02% of the respondents thought there were few mosquitoes in Olympic venues. For the outdoor environment, there were 77.81% of the respondents who considered few mosquitoes in Beijing and 97.26% of the respondents considered that few mosquitoes was in the Olympic venues. About 69.85% of the respondents thought there were fewer mosquitoes in 2008 than in 2007 in Beijing. There were 80.60% of the respondents considered Olympic venues were good. Conclusion The mosquito density in both the indoor and outdoor environment in Olympic venues was lower than that in Beijing city, and the mosquito density in 2008 was lower than that in 2007.
【Abstract】 Objective To know about the population distribution and seasonal fluctuation of main vectors by the successive monitoring from 2006 to 2008 in Beijing Olympic venues, and to provide the scientific basis for vector control. Methods The CO2 trapping lamp method was used for the surveillance of mosquitoes, baited cage trapping method for the flies, night trapping method for rats and paste catching method for cockroaches. Results Culex pipiens pallens was the dominant species of mosquito, accounting for 96.94% of the caught mosquitoes in Beijing Olympic venues. The dominant species of fly was Sarcophaginae, accounting for 46.13 % of the caught flies. Mus musculus Linnaeus was the dominant species of rats, accounting for 63.30 % of the caught rats. Blattella germanica was the dominant species of cockroaches, and all the captured cockroaches were German cockroaches. Compared with 2006 and 2007, the density of main vectors decreased significantly in 2008. During the period of the Olympic Games, the density of main vectors had been in the low level. The density of mosquito declined 88.57% and 89.26%, 69.88% and 81.63% for the fly density, 100% for the rat density and 99.98% for the cockroach density. Conclusion The density of main vectors decreased significantly during the period of Beijing Olympic Games. No serious harmful events caused by vectors occurred in Beijing 2008 Olympic Games. The goal about vector control had been realized completely.
【Abstract】 Objective To study the influence of main meteorological parameters on the mosquito density. Methods With the data of mosquito density from 2005 to 2007 provided by Beijing Center for Disease Control and Prevention and the meteorological data such as average temperature, average minimum temperature, average maximum temperature, rainfall, rainy days, sunshine time, relative humidity and average wind speed, a multiple stepwise regression would be made with statistical software SAS 9.0. Results The multiple regression co-linearity results showed there was strong linear relationship among average temperature,average minimum temperature and average minimum temperature. The multiple stepwise regression equation was y=0.533 97X2+0.078 14X7-2.673 29X8-2.232 56 (X2, X7 and X8 represented average minimum temperature, relative humidity and average wind speed, respectively). Conclusion The main meteorological parameters closely related to mosquito density were average minimum temperature, relative humidity and average wind speed. The order which affected mosquito density was in turn average minimum temperature, average wind speed and relative humidity