A serological survey on classical swine fever (CSF), Aujeszky’s disease (AD) and porcine reproductive and respiratory syndrome (PRRS) virus infections in French wild boars from 1991 to 1998

In early 1992, a CSF epizootic was clinically recognised in a wild boar population of approximately 1300 animals within an area of 250 km 2 located in the east of France. In order to check the CSF situation in wild boars outside this area, a serological survey was carried out in the rest of France,...

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Bibliographic Details
Published in:Veterinary microbiology 2000-11, Vol.77 (1), p.43-57
Main Authors: Albina, E, Mesplède, A, Chenut, G, Le Potier, M.F, Bourbao, G, Le Gal, S, Leforban, Y
Format: Article
Language:English
Subjects:
Age Factors
Animal productions
Animals
Antibodies, Viral - analysis
Aujeszky’s disease
Biological and medical sciences
boars
Classical swine fever
Classical Swine Fever - epidemiology
Classical Swine Fever Virus - immunology
Enzyme-Linked Immunosorbent Assay - veterinary
Epidemiology
France
France - epidemiology
Fundamental and applied biological sciences. Psychology
Herpesvirus 1, Suid - immunology
Microbiology
Pig viruses
Population Surveillance
Porcine reproductive and respiratory syndrome
Porcine Reproductive and Respiratory Syndrome - epidemiology
Porcine respiratory and reproductive syndrome virus
Porcine respiratory and reproductive syndrome virus - immunology
Pseudorabies - epidemiology
Seroepidemiologic Studies
Swine
Swine fever virus
Terrestrial animal productions
Vertebrates
Virology
Wild boar
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Summary:In early 1992, a CSF epizootic was clinically recognised in a wild boar population of approximately 1300 animals within an area of 250 km 2 located in the east of France. In order to check the CSF situation in wild boars outside this area, a serological survey was carried out in the rest of France, for 8 consecutive years (1991–1998). This paper reports on the results obtained during this survey which included wild boars shot during the hunting period but also boars reared within fences. Around 1000–2700 sera a year were tested for the presence of antibodies to classical swine fever virus (CSFV) and also to Aujeszky’s disease virus (ADV). Out of 12 025 sera tested over the whole period, 80 wild boars were found positive for CSF antibodies. Sixty of them were collected on wild boars shot during the years 1992–1994 in the epizootic area located in east of France and 10 were collected in Corsica during the years 1994–1996. The last four positive samples were single reactors coming from areas or farms, which were thereafter confirmed to be serologically negative. These results together with the fact that no disease has been reported so far illustrate that the French wild boar population is probably not concerned by CSF infection (excepted in the east of France where the disease has now become enzootic). Two hundred and forty nine sera were initially detected as CSF positive but confirmed secondarily as positive for border disease (BD) antibodies. This finding shows that wild boars are also susceptible to infection by ruminant pestiviruses. Four hundred and twenty three wild boars have been found positive for ADV antibodies. In addition, from 1993 to 1995, 909 samples were tested for the presence of antibodies to porcine reproductive and respiratory syndrome virus (PRRSV). Thirty three of them were positive. The results on AD and PRRS antibody detection show that wild boars may constitute a reservoir for various infectious diseases of pigs.
ISSN:0378-1135
1873-2542
DOI:10.1016/S0378-1135(00)00255-8