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Título

Tularemia outbreaks and common vole (Microtus arvalis) irruptive population dynamics in northwestern Spain, 1997-2014

AutorLuque-Larena, Juan José; Mougeot, François ; Vidal, Dolors ; Lambin, Xavier; Rodríguez-Pastor, Ruth
Palabras claveTularemia
Francisella tularensis
Common vole
Microtus arvalis
Outbreaks
Spain
Fecha de publicación2015
EditorMary Ann Liebert
CitaciónVector-Borne and Zoonotic Diseases 15(9): 568-570 (2015)
ResumenDuring the last decades, large tularemia outbreaks in humans have coincided in time and space with population outbreaks of common voles in northwestern Spain, leading us to hypothesize that this rodent species acts as a key spillover agent of Francisella tularensis in the region. Here, we evaluate for the first time a potential link between irruptive vole numbers and human tularemia outbreaks in Spain. We compiled vole abundance estimates obtained through live-trapping monitoring studies and official reports of human tularemia cases during the period 1997-2014. We confirm a significant positive association between yearly cases of tularemia infection in humans and vole abundance. High vole densities during outbreaks (up to 1000 voles/hectare) may therefore enhance disease transmission and spillover contamination in the environment. If this ecological link is further confirmed, the apparent multiannual cyclicity of common vole outbreaks might provide a basis for forecasting the risk of tularemia outbreaks in northwestern Spain.
URIhttp://hdl.handle.net/10261/142287
DOI10.1089/vbz.2015.1770
Identificadoresdoi: 10.1089/vbz.2015.1770
e-issn: 1557-7759
issn: 1530-3667
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