EN
The aim of the study was to assess the seroprevalence of Equine rhinitis B viruses (ERBV) in the horse population of the south-eastern part of Poland. Selected horse farms, including breeding farms, stallion herds, purchasing centers and riding clubs were included in the studies. Blood samples were taken from 650 adult horses and foals of different age groups from 23 farms. Commercial ELISA test (Equivir IgG ELISA, Tridelta Development Limited, Ireland) has been used in the studies. On average specific antibodies to ERBV were found in 70.5% of the animals examined. The percentage of positive results of the serological survey was diverse in particular horse farms and ranged from 37.5% to 100% of the animals. It was demonstrated that the farm type and sex of horses did not influence the serological results, while the number of horses in the farm significantly influenced the serological results (P < 0.05).