Leukemia of cattle in the Far Eastern Federal District

In 2021–2022, the incidence and prevalence of bovine leukemia was monitored in the southeastern regions of the Far Eastern Federal District. In the region, in 2021, bovine leukemia was detected in the Amur and Magadan regions, Primorsky and Khabarovsk Territories, the Jewish Autonomous Region, the Republics of Buryatia and Sakha (Yakutia), and in 2022 the Trans-Baikal Territory was added to the listed regions. The disease was not registered in the Magadan region in 2022. The incidence of leukemia in cattle (per 1 thousand heads) in 2022 decreased by 25.0% (compared to 2021). The rate of decrease in bovine leukemia in 2021 was 3.7%, in 2022 1.9%. In the Jewish Autonomous Region in 2022, 40 unfavorable points for bovine leukemia were registered. By the end of the reporting period, five unfavorable points had been rehabilitated, the intensity of the epizootic process of bovine leukemia decreased by 4.5%. In the Sakhalin region, bovine leukemia was not diagnosed in 2021–2022.