title: Trichinellosis survey in the wild boar from the Toledo mountains in south-western Spain (2007-2008): molecular characterization of Trichinella isolates by ISSR-PCR.
abstract: In Spain, trichinellosis represents a public health problem, with an average of five outbreaks per year, wild boar meat being the main source of infection. A trichinellosis survey (2007-2008 hunting campaign) was carried out on wild boars in the Toledo Mountains (south-western Spain, EU) in the context of a surveillance programme on wildlife diseases. A total of 2216 wild boars from different locations of the region were examined. The examination was carried out by veterinarians in the local abattoir (Matadero Municipal de Toledo). The positive samples were sent to the Department of Parasitology (Facultad de Farmacia, UCM) for experimental isolation and specific identification by inter-simple sequence repeat-polymerase chain reaction (ISSR-PCR). Using this technique we identified 17 isolates as Trichinella spiralis with an electrophoretic profile indistinguishable from the T. spiralis reference strain (ISS48). We confirmed that ISSR-PCR is a robust technique for the molecular identification of Trichinella isolates. According to our results, the prevalence of T. spiralis in wild boars from the Toledo Mountains (>800 m above sea level) during the hunting season was approximately 0.77%. The prevalence of T. spiralis (100% of our observations) is a good example of the persistence of this species in sylvatic conditions (coming from the domestic cycle), if a good wild host is abundant. Our observations confirm the major prevalence of T. spiralis over T. britovi in this region, as well as the risk to human health represented by the consumption of uninspected wild boar meat.
authors.affiliation: Departamento de Parasitología, Facultad de Farmacia, UCM, 28040 Madrid, Spain.
authors.forename: R N
authors.initials: RN
authors.lastname: García-Sánchez
authors.forename: J J
authors.initials: JJ
authors.lastname: Nogal-Ruiz
authors.forename: R
authors.initials: R
authors.lastname: Manzano-Lorenzo
authors.forename: J M Arroyo
authors.initials: JM
authors.lastname: Díaz
authors.forename: G Pérez
authors.initials: GP
authors.lastname: López
authors.forename: F J Sánchez
authors.initials: FJ
authors.lastname: Ruano
authors.forename: A Ramiro
authors.initials: AR
authors.lastname: Casas
authors.forename: C Crespo
authors.initials: CC
authors.lastname: Bascón
authors.forename: F
authors.initials: F
authors.lastname: Bolás-Fernández
authors.forename: A R
authors.initials: AR
authors.lastname: Martínez-Fernández
mesh_terms: D000818:Animals; D018509:DNA, Helminth / Q000032:analysis / Q000235:genetics; D016133:Polymerase Chain Reaction / Q000379:methods* / Q000662:veterinary; D015995:Prevalence; D013030:Spain / Q000453:epidemiology; D034421:Sus scrofa; D013553:Swine Diseases / Q000453:epidemiology / Q000469:parasitology*; D017160:Trichinella spiralis / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D014235:Trichinellosis / Q000453:epidemiology / Q000469:parasitology* / Q000662:veterinary
chemical_list: D018509:DNA, Helminth