中国2009年恙虫病疫情分析

Epidemiological analysis on scrub typhus in China,2009

目的分析中国恙虫病流行特征，为恙虫病预防控制提供参考依据。方法从国家疾病报告管理信息系统收集疾病信息，描述恙虫病时间、地区和人群分布，分析恙虫病的流行趋势。结果2009年中国共报告3235例恙虫病病例，主要分布在长江以南地区，发病高峰在7～8月份，而长江以北地区发病高峰在10-11月份；48．72％的病例为女性，职业以农民（64．23％）、散居儿童（9．64％）为主，发病率较高的年龄组为70～74岁（0．47/10万）、60-64岁（0．44/10万）和65-69岁（0．42/10万.结论中国恙虫病报告发病数增加，长江以南为夏季型，长江以北为秋冬型。

Objective To analyze the epidemic feature of scrub typhus in China and to provide scientific basis for control and prevention of the disease. Methods We collected the data from National Disease Reporting Management System to describe time, region, and population distribution of scrub typhus, and to analyze the prevalence trend of scrub typhus in China. Results In 2009, totally 3 235 patients were reported and these patients distributed mainly in Yunnan, Guangdong, Fujian, Shandong, and Anhui province. The peak of onset was during June to September in southern parts of Changjiang River but during October and November in northern parts of Changjiang River. Of the patients,48.72% were female;the persons aged 70 -74 years had the highest incidence rate （0. 47/100 000）, followed by the persons aged 60 -64 years （0. 44/100 000）and the persons aged 65 -69 years （0. 42/100 000）. The patients were mainly peasants （64. 23% ）and children （9.64%）. Conclusion The reported scrub typhus patients were gradully increasing in recent years,with summer type of scrub typhus in the south of Changjiang River and autumn-winter one in the north of Changjiang River.