期刊
SCHWEIZER ARCHIV FUR TIERHEILKUNDE
卷 153, 期 10, 页码 449-456出版社
VERLAG HANS HUBER
DOI: 10.1024/0036-7281/a000247
关键词
Leptospira spp.; seroprevalence; horse; Switzerland; risk factors
A retrospective, cross-sectional study was conducted to determine the leptospiral seroprevalence in clinically healthy horses in Switzerland. A representative sample of 615 horse sera was examined by microscopic agglutination test for the presence of antibodies against 15 Leptospira spp. serovars. In total, 58.5 % (n = 360) of the horses were positive for one or more of the antigens analysed, with 20.3% of them showing titres >= 400. The most prevalent serovar was Pyrogenes (22.6 %), followed by serovars Canicola (22.1 %) and Australis (19.2 %). Older horses, mares, ponies and animals spending increased time on pasture exhibited significantly higher prevalence rates (p < 0.05). Moreover, the prevalence was higher in summer and autumn (p = 0.003). The high seroprevalence in healthy horses indicates that they are often exposed to or infected with Leptospira spp. without developing signs of disease. Therefore, other laboratory and clinical data should always be taken into consideration when interpreting serological test results for Leptospira spp.
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