An Unidentified Sporozoan Encephalomyelitis in Sheep
Open Access
- 1 January 1974
- journal article
- research article
- Published by SAGE Publications in Veterinary Pathology
- Vol. 11 (1), 1-12
- https://doi.org/10.1177/030098587401100101
Abstract
Severe encephalomyelitis with myelomalacia in two young sheep was associated with an unidentified sporozoan parasite that was passing through a schizogonic cycle in astrocytes. Mature merozoites were 5-7 μm in length, had a conoid, subpellicular micro-tubules, paired organelles and many micronemes. Their morphology is compared with that of Toxoplasma and other related sporozoans. The apparent absence of gametogony suggests that the schizogonic cycle in the central nervous system could be an aberrant dead-end cycle.Keywords
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