[Acute toxoplasmosis outbreak in rabbit flocks].

Acute toxoplasmosis occurred in 2-18 month old domestic rabbits of 15 flocks entailing losses of 3-66%. Pathomorphological examinations of 49 rabbits revealed lesions of a generalized granulomatous-necrotizing toxoplasmosis with spleen, liver, lungs and lymphonodes mainly affected. Similarities existed to pseudotuberculosis. The spleen was massively packed with pseudocysts and cysts of Toxoplasma. Electronmicroscopic examinations of organ specimens fixed in formalin assured the identity of Toxoplasma and serological tests (CFT, SFT, IFAT) as well as the mouse test confirmed it.