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Neosporosis in Mexican dairy herds: lesions and immunohistochemical detection of Neospora caninum in fetuses

, : Neosporosis in Mexican dairy herds: lesions and immunohistochemical detection of Neospora caninum in fetuses. Journal of Comparative Pathology 125(1): 58-63

Of 211 aborted bovine fetuses collected from Mexican dairy herds between January 1996 and March 1999, 73 showed microscopical lesions consistent with neosporosis. Of these 73 fetuses, 58 (79%) showed lymphocytic myocarditis, 39 (53%) showed microgliosis and multifocal necrosis in the brain, 39 (53%) showed lymphocytic hepatitis, and 19 (26%) showed lymphocytic myositis. Immunohistochemical examination of brain, myocardium and liver from 53 of the same 73 fetuses demonstrated Neospora caninum antigens in 41 (77%), of which 19 (46%) gave positive results in one of the three sites, 15 (37%) in two, and seven (17%) in three. The results indicated the presence of neosporosis in a number of the main dairy farming regions of Mexico.


PMID: 11437517

DOI: 10.1053/jcpa.2001.0477

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