Bulletin USAMV-CN, 64/2007 (1-2). SEROPREVALENCE OF THE PRRS SYNDROME IN SWINE

The PRRS syndrome after its first official recognition in 1987 in the US extended rapidly, being present in all countries practicing intensive swine farming, Romania being included. Researches were conducted in 5 swine farms in western Romania in order to detect the antibodies against PRRS virus swine sera in sows and young swine. The seroprevalence of the PRRS syndrome in the above-mentioned farms has been established by serum tests sampled from young swine- 3 months of age- and from pregnant and non-pregnant sows during 6-month period. The detection of antibodies against PRRS virus was performed by an enzyme-linked immunoabsorbent assay kit. To confirm the PRRS syndrome there were conducted epidemiologic, clinical, anatomic-pathological and virological tests. The serological test established the seroprevalence of the PRRS syndrome by cross investigations performed at 6-month intervals for each of the 5 swine farms included in the study. In young swine the average of seroprevalence for both sampling was high, 60.27 % an