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目的分析广州市登革热流行特征,为防控提供依据。方法对广州市2012—2013年登革热疫情资料进行描述性分析。结果 2012—2013年全市共报告登革热疫情10起1 486例,其中本地感染1 388例(93.4%),累计发病率10.89/10万,无死亡。高发9~11月(94.9%),以青壮年为主。2012年本地感染涉及5个区,输入性病例涉及7个区市;2013年疫情波及所有区县,局部暴发强度高。蚊媒监测全市平均布雷图指数(BI)高于上年同期水平。2012年毒株为Ⅲ型和Ⅳ型,2013年为Ⅰ型和Ⅱ型。结论 2013年广州市登革热病例大幅度上升,同一地区出现多种型别毒株,使防控面临更严峻的挑战。
Objective To analyze the epidemic characteristics of dengue in Guangzhou and provide the basis for prevention and control. Methods Descriptive analysis of dengue outbreak data from 2012 to 2013 in Guangzhou City was conducted. Results From 2012 to 2013, a total of 1 486 cases of dengue fever were reported in the city, of which 1 388 (93.4%) were local infections with a cumulative incidence of 10.89 / 100 000 without death. High incidence of 9 to 11 months (94.9%), mainly young adults. In 2012, the number of local infections involved 5 districts and the imported cases involved 7 districts and municipalities. In 2013, the epidemic spread to all districts and counties, and the intensity of local outbreaks was high. Mosquito vector monitoring The city’s average Bretton Woods index (BI) was higher than the same period a year earlier. The strains were type III and type IV in 2012 and type I and type II in 2013. Conclusion The cases of dengue fever in Guangzhou increased significantly in 2013, and many types of strains appeared in the same area, making prevention and control more serious challenges.