Abstract. At present, the sphere of tourism, migration and immigration is actively developed, which contributes to the import of infections into the territory of the Russian Federation, including a number of especially dangerous ones, such as Ebola. Hemorrhagic fever Ebola is an acute viral especially dangerous infectious disease characterized by a severe course, pronounced hemorrhagic syndrome and a high mortality rate. The spread of the virus is Central and West Africa. The reservoir of the virus is rodents that live near human dwellings. Pathogen transmission mechanisms: aspiration, contact, artifact. Routes of transmission: airborne, contact, infectious. The virus is found in blood, saliva, nasopharyngeal mucus, urine, semen. Infection of people occurs during the care of the sick; in a domestic environment through hands and household items contaminated with the patient's blood and urine. Human susceptibility to the Ebola virus is high; does not depend on age and gender. Many imported diseases from the category of especially dangerous infections occur in a subclinical form, which complicates clinical diagnosis. The nature of the spread of the Ebola virus on the territory of the Tyumen region, in patients who arrived from foreign countries with an unfavorable epidemiological situation, was analyzed. A prospective observation of 4 patients admitted to the "Regional Infectious Diseases Clinical Hospital" of the city of Tyumen in October - November 2014 from the Democratic Republic of the Congo with suspected subclinical course of an especially dangerous infection - Ebola fever was carried out. In the course of clinical trials, the diagnosis was confirmed. In order to prevent the spread of the disease, an algorithm was developed and approved when working with this group of patients at the Regional Infectious Disease Clinical Hospital in Tyumen. As the research data showed, the possibility of importing tropical infections to the city of Tyumen and to the territory of the Russian Federation was revealed. Timely organization and implementation of treatment, prophylactic and anti-epidemic measures made it possible to eliminate and prevent the spread of a particularly dangerous tropical infection in the Tyumen region.