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  • Title: Incidence of ovine abortion by Coxiella burnetii in northern Spain.
    Author: Oporto B, Barandika JF, Hurtado A, Aduriz G, Moreno B, Garcia-Perez AL.
    Journal: Ann N Y Acad Sci; 2006 Oct; 1078():498-501. PubMed ID: 17114763.
    Abstract:
    The infectious causes of ovine abortion occurring in 148 farms in northern Spain between 1999 and 2003 were investigated. Laboratory analysis included microbiological, serological, pathological and molecular techniques. Border disease was diagnosed in 16% of the flocks, toxoplasmosis in 15%, chlamydiosis in 12%, salmonellosis in 10%, Q fever in 3%, miscellaneous infections in 7% (Yersinia spp., Listeria spp., Brucella spp.), and inflammatory lesions compatible with an infectious cause were seen in 7% of the flock. In an additional 1% of the flocks non-infectious causes were identified, and a diagnosis was not reached in 38% of the flocks. When a PCR retrospective study was carried out to investigate the possible implication of Coxiella burnetii in the cases without diagnosis, including those with inflammatory lesions, the prevalence of this pathogen increased from 3% up to 9% of the flocks, revealing the importance of this zoonotic pathogen as a small-ruminant abortifacient agent. Placenta was the most commonly positive sample, but other fetal tissues were also of value for C. burnetii DNA detection. The present results update information about the situation of abortion in sheep farms in northern Spain, and highlight the relevance of molecular diagnostic tools in routine laboratory analysis of abortions by C. burnetii.
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