流行性出血热(以下简称出血热)是一种病情严重、病死率高的自然疫源性疾病。它的病原体的分离至今尚未成功,故有关出血热的传染源和传播途径问题也缺乏确凿的证据。从30多年来国内外调查资料分析,由于出血热有明显的季节性和散发性,所以多倾向于虫媒传播,认为革螨或恙螨可能起到媒介的作用。我省于近七、八年来才发现有出血热散在发生,至1978年已报告56例病例,都是分布在本省北纬26.7°以北,东经117°～119.5°这个小范围内。因此可以说本省是我国出血热病例发生的东南边缘地区。为了进一步探讨这一地区传播媒介的问题,1972至1978年我们在出血热流行季节,对部分出血热流行地区,进行了鼠类和螨类的调查,现将调查情况初步报告如下。 Epidemic hemorrhagic fever (hereinafter referred to as hemorrhagic fever) is a natural foci of serious illness and high mortality. The isolation of its pathogens has so far not been successful and there is no conclusive evidence of the source of infection and route of transmission of hemorrhagic fever. From 30 years of domestic and international survey data analysis, due to the obvious seasonal and sporadic hemorrhagic fever, so tend to be transmitted by insect media, that leather mites or chiggers may play a role in the media. In our province, hemorrhagic fever was found scattered in nearly seven or eight years. By 1978, 56 cases were reported, all of which were distributed in the small area of ​​26.7 ° north latitude and 117 ° -119.5 ° east longitude. Therefore, it can be said that the province is the southeastern margin of the country where hemorrhagic fever cases occur. In order to further explore the issue of the media in this area, we conducted a survey of rodents and mites from 1972 to 1978 during the epidemic season of haemorrhagic fever in some endemic areas of haemorrhagic fever. The preliminary findings of the investigation are as follows.