Seroepidemiological survey of feline retrovirus infections in domestic andleopard cats in northern Vietnam in 1997

The prevalence of infections with three feline retroviruses (feline immunod eficiency virus (FIV), feline leukemia virus (FeLV) and feline syncytial vi rus (FSV)) was examined in northern Vietnam in 1997. We collected a total o f 77 blood samples from 69 domestic and 8 leopard cats, and examined the pr esence of anti-FIV and FSV antibodies and FeLV p27 antigen in the plasma sa mples by the indirect immunofluorescence and/or two commercial kits. None o f the samples was positive for FIV and FeLV. The overall positive rate of F SV was 31% and the positive rates among the domestic and leopard cats were 29 and 50%, respectively. We isolated FSV from peripheral blood mononuclear cells of 6 domestic and one leopard cats.