Epizootological indicators of bovine leukemia in the Khabarovsk territory

Bovine leukemia is a chronic infectious disease caused by the bovine leukemia virus (BLV). Statistical studies and analysis of the epizootic situation regarding bovine leukemia in the Khabarovsk Territory were carried out. The research was conducted based on veterinary reporting data for the period 2007-2022. The incidence of VLBRS in animals in the Khabarovsk Territory was characterized by the uneven manifestation of the epizootic process. The leukemic process had three rises: 2013, 2015, 2019-2020. During the period of rising incidence from 2007 to 2015 there were two periods of slight decrease in incidence in 2012 and 2014. The highest rate of increase in incidence was observed in 2008 (131.1%), 2013 (72.1%) and 2015 (46.8%). The highest rate of decline in incidence was noted in 2016 (34.6%) and 2021 (48.2%). The rate of disadvantage was high in 2014 (8.2%) and highest in 2021 (13.1%).