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Título: | Temporal trend of tuberculosis in wild ungulates from mediterranean Spain |
Autor: | Vicente, Joaquín CSIC ORCID ; Barasona, José A. CSIC ORCID; Acevedo, Pelayo CSIC ORCID ; Ruiz-Fons, Francisco CSIC ORCID ; Boadella, Mariana CSIC ORCID; Díez-Delgado, Iratxe CSIC ORCID; Beltrán-Beck, Beatriz CSIC ORCID; González-Barrio, David CSIC ORCID; Queirós, João CSIC ORCID; Montoro, Vidal CSIC ORCID; Fuente, José de la CSIC ORCID ; Gortázar, Christian CSIC ORCID | Palabras clave: | Wildlife Disease progression Tuberculosis Time trends Wild boar Epidemiology Persistent infections Red deer Spain |
Fecha de publicación: | 2013 | Editor: | Wiley-Blackwell | Citación: | Transboundary and Emerging Diseases 60(s1): 92-103 (2013) | Resumen: | Tuberculosis (TB), a chronic disease caused by infection with the Mycobacterium tuberculosis complex, is endemic in wild boar (Sus scrofa) and red deer (Cervus elaphus) in south-central Spain. Understanding the temporal dynamics of this chronic infection requires long time series data collection over large areas. The aim of this paper was to identify the determinants of TB prevalence and severity in both species in Ciudad Real province, Spain, from 2000 to 2012. Study variables included management, population dynamics, and a range of geographical and climatological factors. The prevalence of TB in wild boar increased from 50% to 63% since the study commenced. This may be due to an increased hunting bag (a proxy for population abundance), which was correlated with TB infection rates. Low rainfall (a stochastic factor) was associated with higher individual risk of TB presence and progression, resulting in an increased proportion of severe cases of wild boar TB in dry years. This was probably a result of increased food restriction leading to a higher susceptibility to TB. In contrast, red deer TB showed an apparent stable trend, which may be a consequence of the species' higher and stable population size. Hunting management, characterized by fencing, was associated with a higher risk of TB in both wild boar and red deer, suggesting that intensive hunting management may have contributed to exacerbated TB figures. This difference was more marked in red deer than in wild boar, probably because fencing imposes less restriction on movement, population mixing and TB spread to wild boar than to deer. Our findings on TB dynamics are fundamental for assessing the impact of future disease-control actions (e.g. field vaccination). Moreover, such control plans must operate in the long term and cover large areas. | URI: | http://hdl.handle.net/10261/142956 | DOI: | 10.1111/tbed.12167 | Identificadores: | doi: 10.1111/tbed.12167 issn: 1865-1674 e-issn: 1865-1682 |
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