title: Serologic studies of naturally occurring feline infectious peritonitis.
abstract: Serum antibodies to the feline infectious peritonitis (FIP) virus were measured in cats, using an indirect fluorescent antibody procedure. Antibody titers of 1:400 to 1:25,600 were seen in cats with both effusive and noneffusive forms of FIP. About 87% of the normal cats in FIP problem catteries and 20% of the cats in the Davis, Ca, area also had antibody titers to the FIP virus, ranging from 1:25 to 1:400. Although the infection rate is high among cats, relatively few of the cats infected with the FIP virus ever develop clinically apparent FIP.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002371:Cat Diseases / Q000276:immunology*; D002415:Cats; D005455:Fluorescent Antibody Technique; D010538:Peritonitis / Q000276:immunology / Q000662:veterinary*; D014777:Virus Diseases / Q000276:immunology / Q000662:veterinary*
chemical_list: D000914:Antibodies, Viral