Infection of reindeer of the Yamalo-Nenets Autonomous Okrug with pathogens of vector-borne diseases

health, therefore, monitoring the prevalence of these diseases is an urgent area of scientific research. Methods. The material for the research was stabilized reindeer blood (n = 83). Infection of animals with anaplasmosis, babesiosis, borreliosis, teileriosis and ehrlichiosis was established by PCR with subsequent separation of amplification products by vertical electrophoresis in polyacrylamide gel. The morphological profile of the blood was studied using the URIT-3020 analyzer. Results. The genetic material of the pathogens of the genus Babesia was found in the blood of 18.1% of animals, with a maximum infection rate of adults (20.0%), and the DNA of tayleria was isolated in 2.4% of samples. Anaplasmosis infection averaged 3.6%, with a maximum infection rate of choruses (10.0%). The causative agent of ehrlichiosis was identified in 30.1% of the samples, while in 8.4% the carrier was in the form of monoinfection. Spirochaetosis was detected in 50.6% of the surveyed livestock, with a maximum infection of vazhenok (55.6%). In the form of monoinfection, borreliosis was found in 12.1% of reindeer. Coinfection of borreliosis and ehrlichiosis was most often observed (the average infection with the two pathogens was 19.3%). Mixinfection of Babesia, Borrelia and Ehrlichia was found in 10.8% of reindeer, and simultaneous carriage of Anaplasma , Babesia and Borrelia was detected in 1.2% of the studied livestock. Hematological studies have shown that in all age and gender groups, against the background of infection with vector-borne pathology, there is a decrease in the average volume of red blood cells (by 3.6–8.7%, р ≤ 0.05) and the hemoglobin content in the erythrocyte (by 3.4–4.8%, р ≤ 0.05).