Rapid simultaneous diagnosis of toxoplasmosis and encephalitozoonosis in rabbits by carbon immunoassay.

Examination of 90 laboratory rabbits by the carbon immunoassay using mixed Toxoplasma gondii and Encephalitozoon cuniculi antigen, revealed 14 rabbits as positive to Toxoplasma gondii and 22 to Encephalitozoon cuniculi. Cross reactions were not encountered. Blood samples also were examined by the indirect fluorescent antibody test for antibody to Toxoplasma gondii. There was complete correlation for positive and negative blood samples between the two tests. Necropsy of 10 rabbits positive to Toxoplasma gondii revealed two rabbits with microscopic lesions due to toxoplasmosis.