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  • Title: Prevalence and serovars of leptospira involved in equine abortions in central Kentucky during the 1990 foaling season.
    Author: Donahue JM, Smith BJ, Donahoe JK, Rigsby CL, Tramontin RR, Poonacha KB, Wilson MA.
    Journal: J Vet Diagn Invest; 1992 Jul; 4(3):279-84. PubMed ID: 1515489.
    Abstract:
    A study to determine the prevalence of leptospira-induced abortions in the central Kentucky equine population during the 1990 foaling season and to determine the leptospira serovars responsible was conducted. From July 1, 1989 through June 30, 1990, 32 (4.4%) of 726 submissions (fetuses, stillborn foals, and/or placentas) were diagnosed as leptospirosis by the fluorescent antibody test and/or microscopic agglutination test. Attempts were made to isolate leptospires from the fetal tissues and/or the dam's urine in 31 of these cases. Leptospira interrogans serovar kennewicki was isolated from 11 (35.5%) and serovar grippotyphosa from 2 (6.5%) of the 31 cases. Of 12 cases that were culture negative with serologically positive fetal fluids, 8 had titers against serovar pomona, 1 against bratislava, 1 against grippotyphosa, 1 against hardjo, and 1 against both bratislava and pomona.
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