[Omsk hemorrhagic fever--current status of the problem].

The author sums up the data on the history of discovery and research of Omsk hemorrhagic fever (OHF), comparative characteristics of its natural foci, and clinical features of epizootic and epidemic processes at the end of the 1940s and at present. Presents the modern concept of OHF virus ecology and discusses differences of its biological properties in the strains isolated from different sources. Based on analysis of many-year findings and major publications, the author offers a long-term epizootological and epidemic prognosis for OHF in endemic territories.