2011—2012年中国发热伴血小板减少综合征监测分析

Epidemic situation and surveillance on SFTS in China,2011-2012

目的分析2011—2012年中国发热伴血小板减少综合征（SFTS）的疫情概况、流行特征和趋势。方法对2011—2012年我国SFTS病例资料及监测资料进行流行病学分析。结果2011—2012年间我国共报告SFTS病例1229例，平均发病率为0．046／10万，累计死亡107例，病死率8．7％。全国共16个省、市、自治区有报告病例。每年5—7月为发病高峰。报告病例以55～70岁年龄组居多，占总病例数的44．2％，病死率8．5％，〈30岁病例占总数1．63％，且无死亡病例。男女性别比为0．93：1。职业分布以农民为主（86．8％）。结论发热伴血小板减少综合征病例在我国分布广泛，尤其是在华中和华东地区，发病具有明显的季节性。应加强高发及可能发生疫情地区监测及出入境检疫。

Objective To analyze the data of surveillance on severe fever with thrombocytopenia syndrome （SFTS） ,from 2011 to 2012 in China. Methods Descriptive methods were conducted to analyze the surveillance data from 2011 to 2012 which were collected from the internet-based National Notifiable Disease Reporting System. Results From 2011 to 2012, a total of 1229 SFTS cases and 107 deaths were reported in China with the average annual incidence rate of 0. 046/100 000 and case fatality rate of 8.7%. Compared to 2011, morbidity of 2012 has increased by 23.5% and mortality has decreased by 32%. 16 provinces reported SFTS cases. More cases occurred in spring and summer seasons,with the peak in May to July, during this period, 69% of the total cases were reported. The ages of the patients ranged from 1 to 85 years, 44. 2% of total case was 55 to 70 years old, there were no differences in sex. Of all the cases 86.8% was farmer. Conclusion Severe fever with thrombocytopenia syndrome in widely distributed in China, especially in the central and eastern regions, the incidence has obvious seasonal. Surveillance and immigration quarantine should be strengthened.