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Complex links between natural tuberculosis and porcine circovirus type 2 infection in wild boar

AuthorsDíez-Delgado, Iratxe ; Boadella, Mariana ; Martín-Hernando, Mari Paz ; Barasona, José A. ; Beltrán-Beck, Beatriz ; González-Barrio, David ; Vicente, Joaquín ; Garrido, Joseba M.; Segalés, Joaquim; Gortázar, Christian
Issue Date2014
PublisherHindawi Publishing Corporation
CitationBioMed Research International: 765715 (2014)
AbstractIndividuals in natural populations are exposed to a diversity of pathogens which results in coinfections. The aim of this study was to investigate the relation between natural infection with tuberculosis (TB) due to infection by bacteria of the Mycobacterium tuberculosis complex and porcine circovirus type 2 (PCV2) in free-ranging Eurasian wild boar (Sus scrofa). Apparent prevalence for TB lesions and PCV2 infection was extremely high in all age classes, including piglets (51% for TB; 85.7% for PCV2). Modeling results revealed that the relative risk of young (less than 2 years old) wild boar to test positive to PCV2 PCR was negatively associated with TB lesion presence. Also, an interaction between TB, PCV2, and body condition was evidenced: in wild boar with TB lesions probability of being PCV2 PCR positive increased with body condition, whereas this relation was negative for wild boar without TB lesions. This study provides insight into the coinfections occurring in free-ranging host populations that are naturally exposed to several pathogens at an early age. Using TB and PCV2 as a case study, we showed that coinfection is a frequent event among natural populations that takes place early in life with complex effects on the infections and the hosts.
Publisher version (URL)http://dx.doi.org/10.1155/2014/765715
Identifiersdoi: 10.1155/2014/765715
e-issn: 2314-6141
issn: 2314-6133
Appears in Collections:(IREC) Artículos
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