[Detection of natural foci of hemorrhagic fever with renal syndrome on the territory of the Komi ASSR].

Natural foci of hemorrhagic fever with the renal syndrome (HFRS) have been found for the first time in the Komi ASSR. The main source of the causative agent in this territory was Clethrionomys glareolus the average infection rate of which was 4.4% and in some areas as high as 22.6%. For the first time in the republic the portion of human population naturally immune to HFRS was determined, comprising 5.2% of the population. The immune structure of the population did not differ from that in other focal territories of the European part of the USSR.