Asymptomatic Salmonellosis in Healthy Adult Horses

onts were seen in the brain and were not associated with parasite in the present case resembles a Sarcocystis parasite inflammation. that causes fatal encephalomyelitis in horses, cattle, and Although the diagnosis was initially mistaken as toxosheep. plasmosis, the parasite in the present study is definitely not either T. gondii or N. caninum because T. gondii and N. References caninum divide by endodyogeny, whereas in the present 1. case, the parasite divided by schizogony. In endodyogeny, Dubey JP, Beattie CP: 1988, Toxoplasmosis of animals and man. CRC Press, Boca Raton, Florida. 220 pp. the parasite divides into 2, and there is no multinucleated 2. Dubey JP, Carpenter JL, Speer CA, et al.: 1988, Newly recogstage. Examination for bacteria, and rabies and distemper nized fatal protozoan disease of dogs. J Am Vet Med Assoc 192: viruses were negative. 1269-1285. Both tachyzoites and tissue cysts of T. gondii and N. ca3. Dubey JP, Speer CA, Fayer R: 1989, Sarcocystosis of animals ninum are distinct from the parasite found in the present and man. CRC Press, Boca Raton, Florida. 215 pp. case. Tissue cysts of T. gondii and N. caninum contain PAS4. Lindsay DS, Dubey JP: 1989, Immunohistochemical diagnosis positive bradyzoites enclosed in a well-defined cyst wall. No of Neospora caninum in tissue sections. Am J Vet Res 50:198lsuch stage was found in the present case. In structure, the 1983.