Abstract: The composition of small animals,the predominant species of rats and the virus-carrying rates were understood through surveillance studies on the natural nidi of HFRS in forest regions in China. The predominant species were Apodemus peninsulae and Clethrionomys rufocanus in forest regions of Chang Bai Mountain,Apodemus agrarius and Apodemus peninsulae in forest regions of Lesser Xing'an Mountains, Clethrionomys rutilus and Clethrionomys rufocanus in forest regions of Artai Mountain,Rattus confucianusin forest regions of SuiYang, Guizhou Province, and Apodemus agrarius in forest regions of Dabie Mountain. The virus carrying rate of the predominant species of rat was rather high. Comparing the primeval forests with exploited forest regions, some agriculture field rats, grass land rats and house rats have already invaded in the latter, while in the former the rats were forest rats. In primeval forests without invasion of non forest rats, HFRS virus antigen-positive rats have not yet been found.

摘要： 通过对林区肾综合征出血热（HFRS）自然疫源地的监测研究，了解了小兽组成、优势鼠种及带病毒率。优势种长白山林区为大林姬鼠和棕背；小兴安岭林区为黑线姬鼠和大林姬鼠；大兴安岭林区为黑线姬鼠和莫氏田鼠；阿尔泰林区为红背和棕背；贵州绥阳林区为社鼠；安徽大别山林区为黑线姬鼠。优势鼠种带病毒率较高。原始森林与经济开发林区比较，后者一些栖息农田草原及家栖鼠已经侵入，前者则为林栖种类；没有非林区鼠侵入的原始森林目前未发现病毒抗原阳性。

关键词: 肾综合征出血热, 林区疫源地