1.Evaluation of a new type of mosquito trap in monitoring Aedes in community
Danhong MO ; Minhui ZHU ; Hongxia LIU ; Bing LI ; Weizhong ZHAO
Shanghai Journal of Preventive Medicine 2023;35(11):1136-1140
ObjectiveTo develop a new mosquito trap and evaluate its effectiveness in Aedes albopictus monitoring in an urban community. MethodsThe first-round field test was conducted in a well-greened residential neighborhood with high Aedes albopictus density calculated by human landing catch in August 2022, in Minhang District, Shanghai. 65 new test containers with different designs were randomly deployed in the field. These trap containers were designed by different material, color, hole size, shape and top cover colors. The results of mosquito and its egg trapping were observed and recorded continuously for 7 days. In September 2022, the second round of experiment was conducted. After comparison, an optimized trap container was designed. 140 new trap containers were compared with 140 traditional ones to evaluate the effectiveness. SPSS 22.5 software was used for statistical analysis. ResultsThere were significant changes in the outcome of mosquito and its egg trapping on the 4th and 7th day of the pre-experiment deployment of the three kinds of containers. The 200 ml container cup with three round holes in the body had the best effect on trapping mosquitos and eggs, with a positive rate of 45.5% (5/11), while other type of contrainer cup only had a positive rate of 12% (6/50) in trapping mosquitos and eggs. Statistical significant differences (χ2=45.443,P <0.001) existed between the two tpyes of cups within the first kind of trapping container. The second kind of trapping container showed round and oval holes had better effect on mosquito trapping, with a positive rate of 55.6% (5/9). The third kind of hanging container can resist strong wind. The best mosquito trapping effect of three round holes was 66.7% (2/3). The container wall should not be made of rough material, which was easy to cause the escape of adult mosquitoes. Combined with the three types of containers, the new contariner should be top transparent, and the top 1/3 of the side should paint black with 3 round holes. The effective recovery rate of the new container was higher than that of the traditional one under the exclusion of human factors, and had the advantage of preventing rain, wind and rollover, but the effect of trapping mosquito and its egg was comparable to the traditional one(χ2D4=0.197,P=0.658; χ2D7=0.125 ,P=0.724). ConclusionThis new type of mosquito trap is worth further exploration and research, which can improve the trapping efficiency, overall recovery rate and the accurate confirmation of the mosquito density.
2.Analysis of obesity factors among public primary school students in a town, Minhang District, Shanghai
Danhong MO ; Weizhong ZHAO ; Duojun XU ; Bing LI ; Xiaosa WEN ; Qi ZHAO ; Wenhao XUE
Shanghai Journal of Preventive Medicine 2024;36(1):84-89
ObjectiveTo identify and analyze the possible influencing factors of obesity among public primary school students in Minhang District, Shanghai. MethodsBasic data, collected through questionnaire stars, was imported with merged physical examination data into Excel to form a database. Data were collected by questionnaire and analyzed by SPSS 22.00. Independent sample t-test was used for the data with normal distribution. Nonparametric test was used for the data with non-normal distribution. χ2 test was used for the quantitative data. Logistic regression was used for univariate and multivariate analysis