Epidemiology of Mycobacterium bovis infections of pigs and wild boars using a molecular approach
Autor: | A. Parra, Pedro Fernández-Llario, A.I. García, M. Hermoso de Mendoza, Juan Manuel Alonso, J. Hermoso de Mendoza, A. Tato, J. Larrasa |
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Rok vydání: | 2003 |
Předmět: |
DNA
Bacterial Male medicine.medical_specialty Veterinary medicine Swine Animals Wild Minisatellite Repeats Polymerase Chain Reaction Microbiology Wild boar biology.animal Epidemiology Image Processing Computer-Assisted medicine Bovine tuberculosis Animals Tuberculosis Mesenteric lymph nodes Natural reservoir Phylogeny Disease Reservoirs Swine Diseases Molecular Epidemiology Mycobacterium bovis General Veterinary biology Host (biology) General Medicine biology.organism_classification Domestic pig medicine.anatomical_structure Spain DNA Intergenic |
Zdroj: | Veterinary Microbiology. 97:123-133 |
ISSN: | 0378-1135 |
Popis: | A molecular epidemiological approach was applied to establishing a possible role for the wild boar as a natural reservoir of Mycobacterium bovis in Sierra de Villuercas, Western Spain; an area free of farmed cattle and wild deer populations. Spoligo and VNTR typing were used over a three year period to study the epidemiological relationship between the occurrence of bovine tuberculosis (TB) in extensively bred Iberian pigs and indigenous wild boar. The 37 sampled wild boar showed different degree of calcified granulomatous lesions in retropharyngeal, mediastinal and pulmonary lymph nodes. The 25 sampled Iberian pigs showed calcified lesions, mainly in the respiratory tract. Lesions located in the mesenteric lymph nodes appeared secondarily. M. bovis was isolated from all affected animals. Twenty-five and 37 isolates of M. bovis were obtained from domestic pigs and wild boar, respectively. Our findings provide evidence that supports the possibility of cross infection between wild boar and domestic pig populations. This is contrary to the generally held belief that swine represent an epidemiological dead end host and play no role in the epidemiology of M. bovis. |
Databáze: | OpenAIRE |
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