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目的分析广州市2006年登革热疫情流行病学特征,为登革热预防控制工作的开展提供参考依据。方法对广州市疫情监测与报告信息系统和实验室监测信息系统,以及相关的现场调查报告、疫情简报等进行统计与分析。结果广州市2006年报告登革热输入性病例10例,本地感染病例765例,累计发病率为10.19/10万,无死亡病例,疫情涉及9个区82个行政街(镇);全年本地疫情流行期为6月中旬至12月上旬,明显存在8-9月和10-11月两次发病高峰;共发生60起暴发疫情,其中10起暴发疫情对流行曲线的走势有较大影响,累计病例456例,占全年全市总报告病例数的59.61%;实验室监测表明2006年广州市病毒流行株为Ⅰ型登革病毒,各1例输入性病例,毒株分别为Ⅲ、Ⅰ型登革病毒。结论2006年广州市发生登革热流行,其持续时间长,波及范围较广;疫情由输入性病例引起本地暴发流行的可能性较大,尚无明确证据表明登革热在广州市已形成地方性流行的态势。
Objective To analyze the epidemiological characteristics of dengue fever in Guangzhou in 2006 and provide a reference for the prevention and control of dengue fever. Methods The statistics and analysis of epidemic situation monitoring and reporting information system and laboratory monitoring information system in Guangzhou, as well as relevant field investigation reports, epidemic briefings and so on were conducted. Results In 2006, Guangzhou reported 10 cases of imported dengue fever and 765 cases of local infection with a cumulative incidence rate of 10.19 / 100 000. There were no deaths and the epidemic situation involved 82 administrative streets (towns) in 9 districts. The epidemic of the epidemic throughout the year Between mid June and early December, there were obviously two peak incidences from August to September and from October to November. There were altogether 60 outbreaks, of which 10 outbreaks had a significant impact on the trend of the epidemic curve. The cumulative cases 456 cases, accounting for 59.61% of the total number of reported cases in the whole city. Laboratory tests showed that the epidemic strain of Guangzhou in 2006 was type Ⅰ dengue virus, with 1 case of imported cases and strains of type Ⅲ and Ⅰ, respectively virus. Conclusion The dengue epidemic occurred in Guangzhou in 2006, which lasted for a long time and covered a wide range. There was a high possibility that the outbreak was caused by imported cases in mainland China. There is no clear evidence that dengue fever has become endemic in Guangzhou City .