Abstract
European legislation allows the official recognition of Trichinella-free pig holdings, provided Trichinella sp. infection is absent from humans and prevalence of Trichinella sp. infection in red foxes (Vulpes vulpes) is below 0.1% in the area, region or country. Tibialis anterior muscle samples from 1,319 red foxes captured in Catalonia (NE Spain) between 1998 and 2007 were analyzed for Trichinella sp. using the digestion method. Four foxes resulted positive (one in 1999, one in 2002 and two in 2006), accounting for a low prevalence (0.3%). However, this prevalence was concentrated in mountain or rural areas with a low sample size, reaching high local prevalences. The two positive samples in 2006 were characterized as Trichinella britovi, and a sylvatic cycle of trichinellosis seems to occur, at least in the rural insufficiently sampled regions of Catalonia. Overall, the results obtained do not currently allow the establishment of Trichinella-free pig holdings in the study area, but further research is needed to better know the prevalence and cycle of Trichinella sp. in Catalonia.
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Acknowledgments
The authors are grateful to the Departament de Medi Ambient i Habitatge and the Departament d’Agricultura, Alimentació i Acció Rural of the Generalitat de Catalunya for their collaboration and providing data. This study was funded by the Agència de Protecció de la Salut of the Departament de Salut of the Generalitat de Catalunya.
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López-Olvera, JR., Vives, L., Serrano, E. et al. Trichinella sp. in red foxes (Vulpes vulpes) from Catalonia, NE Spain. Parasitol Res 108, 1589–1591 (2011). https://doi.org/10.1007/s00436-011-2254-2
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DOI: https://doi.org/10.1007/s00436-011-2254-2