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  • Title: Feline immunodeficiency virus (FIV) infection in cats at necropsy: a serological study.
    Author: Holznagel E, Lutz H, Steinhauer D, Reinacher M.
    Journal: J Comp Pathol; 1997 May; 116(4):339-52. PubMed ID: 9179747.
    Abstract:
    Sera collected post mortem during a 6-month period from cats were tested for feline immunodeficiency virus (FIV)-specific antibodies by (1) an enzyme-linked immunosorbent assay (ELISA), (2) an indirect peroxidase-based immunocytological test (IP), (3) a Western immunoblotting (WB) method with FIV-infected cell lysates, and (4) a WB method with purified viral antigen. All four methods were capable of detecting FIV-specific antibodies in haemolysed sera. However, the ELISA showed the lowest "positive predictive value" (PVpos = 22%) followed by the IP (PVpos 50-60%). Serum was FIV antibody-positive in 6% (15/255) of all cats examined. The mean age of seropositive cats was 9 years (4 years among seronegative cases) and the male-to-female ratio in such cats was 1.8 to 1 (overall ratio 0.8 to 1). Forty per cent of the seropositive cats were in the final phase of acquired immune deficiency syndrome. Feline leukaemia virus (FeLV) predominated among viral co-infections. It was concluded that (1) a combination of the IP and WB reliably detected FIV-specific antibodies in sera collected post mortem, and (2) at post-mortem examination, cats from high-risk groups (male, > 5 years old, hypercellular bone marrow) were frequently infected with FIV.
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