Serologic diagnosis of toxoplasmosis in cats fed Toxoplasma gondii tissue cysts.
Serum samples derived from 7 cats 3 to 950 days after cats were fed tissue cysts of Toxoplasma gondii were evaluated using Sabin-Feldman dye, modified agglutination, indirect hemagglutination, and latex agglutination tests. The modified agglutination test, using whole formalin-preserved tachyzoites, was more sensitive for diagnosis of toxoplasmosis than were other tests. Titers from the modified agglutination test that used formalin-preserved tachyzoites were higher than those from the modified agglutination test that used acetone-preserved tachyzoites. Although cats had no clinical signs of toxoplasmosis, T gondii antibody titers remained high (greater than 1:1,000) for up to 29 months.
Dubey
J P
JP
Livestock and Poultry Sciences Institute, USDA, Beltsville, MD 20705.
Thulliez
P
P
D000372:Agglutination Tests; D000818:Animals; D000913:Antibodies, Protozoan / Q000032:analysis*; D002371:Cat Diseases / Q000175:diagnosis*; D002415:Cats; D005260:Female; D006386:Hemagglutination Tests; D007841:Latex Fixation Tests; D008297:Male; D011237:Predictive Value of Tests; D014122:Toxoplasma / Q000276:immunology*; D014124:Toxoplasmosis, Animal / Q000175:diagnosis*
D000913:Antibodies, Protozoan