为了预测流行性出血热(以下简称出血热)的疫情,组织预防,落实“预防为主”的方针,我院从1972～1974年连续三年先后在分布于5个县境内的农场,做了鼠螨调查。各农场所在县均为本病的疫区,农场内和生产队过去均有少数散在出血热病例出现,发病者绝大多数均系从事水稻生产人员。现将1974年调查结果,同时对比过去观察材料一并报告于后。 In order to predict the epidemic of epidemic hemorrhagic fever (hereinafter referred to as hemorrhagic fever) and organize prevention and implementation of the principle of “prevention first”, our hospital from 1972 to 1974 for three consecutive years has been distributed in five counties in the farm, Mice did a survey. The counties in all farms are endemic to this disease. In the past, there were a few cases of hemorrhagic fever in the farms and in the production teams. The majority of those who were ill were those engaged in rice production. Now 1974 survey results, while comparing the past observations together with the report later.