Bovine herpesvirus 1 (BHV1) seroprevalence in the breeding cattle population of the veneto region: prospects for the implementation of a control programme

Nardelli, S.; Marangon, Stefano; Pozza, Manuela Dalla; Ponzoni, Andrea; Viel, L.; Brichese, M.

doi:10.1046/j.1439-0450.1999.00300.x

Cited by 5 publications

(9 citation statements)

References 13 publications

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“…The ELISA used cannot distinguish between sAb induced by the conventional vaccine and those raised against the field virus such that the seroprevalences obtained are higher than true infection values (Nardelli et al, 1999). Thus, an animal found seropositive for BHV-1 may have been vaccinated or naturally infected at some point, since the virus remains latent throughout its lifetime and may be reactivated by factors causing stress or immunosuppression (calving, corticosteroids, overcrowding, transport, other illnesses, etc.)…”

Section: Discussionmentioning

confidence: 99%

“…Given the significantly larger sizes of the dairy herds, it was therefore more likely that an individual animal would be positive for the virus (McDermott et al, 1997;Nardelli et al, 1999). Additionally, the larger dairy herds were subjected to more extensive vaccination programmes, which lead to overreporting of seroprevalence figures since the ELISA used in both studies fails to discriminate between the vaccine and field virus (Nardelli et al, 1999).…”

Section: Bhv-1 Seroprevalence 803mentioning

confidence: 99%

“…The older the animal, the more likely it is that it will have been vaccinated or exposed to a natural infection source (Nardelli et al, 1999;Solis-Calderón et al, 2003). Antibodies against natural infection start to appear 8-10 days postinfection and persist throughout the animal's life (Álvarez et al, 2000;Muylkens et al, 2007).…”

Section: Bhv-1 Seroprevalence 803mentioning

confidence: 99%

“…Antibodies against natural infection start to appear 8-10 days postinfection and persist throughout the animal's life (Álvarez et al, 2000;Muylkens et al, 2007). Vaccinederived antibodies persist for several years (Van der Poel et al, 1995;Nardelli et al, 1999).…”

Section: Bhv-1 Seroprevalence 803mentioning

confidence: 99%

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Prevalence of serum antibodies to bovine herpesvirus-1 in cattle in Galicia (NW Spain)

Eiras¹,

Dieguez²,

Sanjuán³

et al. 2009

Span. j. agric. res.

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Infectious bovine rhinotracheitis (IBR) is a highly infectious disease of cattle caused by bovine herpesvirus 1 (BHV-1) that causes considerable economic losses to the dairy and beef industry. This report describes the results of two surveys in which prevalence of serum antibodies against BHV-1 in Galicia (NW Spain) was determined. The first was performed on the entire cattle population of the region (year 2000) and the second on the herds included in a voluntary livestock health programme, which comprises IBR, conducted by a group of farms designated ADSG (Health Defence Groups) in this same region (year 2004). Anti-BHV-1 antibodies were determined by anti-gB ELISA in serum samples from all animals aged over one year in the area's dairy and beef herds. Mean individual animal and herd prevalence recorded in 2000 were 38.4% (ranging 37.3%-39.5%; 43.2% dairy, 26.8% beef) and 50.4% (ranging 46.4%-54.4%; 58.3% dairy, 48.1% beef), respectively. Mean true prevalence by herd and animal for the ADSG farms were 47.2% (44.9%-49.5%; 51.5% dairy, 45.2% beef, 42.3% mixed) and 35.7% (35.3%-36.1%; 37.8% dairy, 33.1% beef, 25.5% mixed), respectively. However, the use of non-maker vaccines make difficult to develop a control and eradication program based on serological analysis.Additional key words: BHV-1, IBR, seroprevalence. Resumen Prevalencia de anticuerpos séricos frente al herpesvirus bovino tipo 1 en el ganado vacuno de Galicia (NO España)La rinotraqueitis infecciosa bovina (IBR) es una enfermedad infecciosa del ganado producida por el herpesvirus bovino tipo 1 (BHV-1) que causa considerables pérdidas económicas en la industria láctea y cárnica. Este artículo describe los resultados de dos estudios de prevalencia en los que se determina la presencia de anticuerpos frente al BHV-1 en Galicia (NO de España). El primero fue realizado sobre toda la población bovina de la región (año 2000) y el segundo sobre los rebaños pertenecientes a las asociaciones de defensa sanitaria ganaderas (ADSG) en la misma región (año 2004), que realizan un programa de vigilancia que incluye la IBR. La presencia de anticuerpos se determinó con un ELISA anti-gB en las muestras de suero de todos los animales mayores de 1 año de los rebaños estudiados. Las prevalencias medias por animal y por rebaño halladas en 2000 fueron 38,4% (intervalo 37,3%-39,5%; 43,2% en leche y 26,8% en carne) y 50,4% (intervalo 46,4%-54,4%; 58,3% en leche y 48,1% en carne) respectivamente. La prevalencia real media de rebaño y animal para las granjas de las ADSG fue de 47,2% (44,9%-49,5%; 51,5% en leche, 45,2% en carne y 42,3% en mixtas) y 35,7% (35,3%-36,1%; 37,8% en leche, 33,1% en carne y 25,5% en mixtas) respectivamente. Sin embargo, el uso de vacunas no marcadoras dificulta el desarrollo de programas de control y erradicación basados en el análisis serológico.Palabras clave adicionales: BHV-1, IBR, seroprevalencia.

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Section: Discussionmentioning

confidence: 99%

Section: Bhv-1 Seroprevalence 803mentioning

confidence: 99%

Section: Bhv-1 Seroprevalence 803mentioning

confidence: 99%

Section: Bhv-1 Seroprevalence 803mentioning

confidence: 99%

See 2 more Smart Citations

Prevalence of serum antibodies to bovine herpesvirus-1 in cattle in Galicia (NW Spain)

Eiras¹,

Dieguez²,

Sanjuán³

et al. 2009

Span. j. agric. res.

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“…Finally, most researchers agree with the result than bigger herd size is an important risk factor for infection with BHV1 (Mazzucchelli, 1995;McGowan and Murray, 1998;Nardelli et al, 1999;Solis-Calderon et al, 2003;Boelaert et al, 2005).…”

Section: Discussionmentioning

confidence: 69%

Seroprevalence and risk factors associated with bovine herpesvirus type 1 (BHV1) infection in non-vaccinated cattle herds in Andalusia (South of Spain)

González-García

Maldonado

Gómez-Pacheco

et al. 2009

Span. j. agric. res.

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An epidemiological and serological survey of bovine herpesvirus 1 (BHV1) infection was conducted in Andalusia from January to April of 2000. A total of 4,035 blood samples were collected from 164 herds. A questionnaire, which included variables potentially associated with infection, was filled out for each herd. Serum samples were obtained to identify specific BHV1 antibodies and were tested using a blocking ELISA test. The observed crude odds ratio (OR) (estimate of the chance of a particular event occurring in an exposed group in relation to its rate of occurrence in a nonexposed group) for vaccination is 9.8 (95 % confidence interval: 8.3-11.7). The vaccinated group comprised large dairy farms. This study can only be considered as representative of unvaccinated, small to medium size dairy farms and beef farms in Andalusia. True seroprevalence of the BHV1 virus in nonvaccinated bovine populations in Andalusia reached 45.7% of individuals and 70.4% of herds. Risk factors for BHV1 infection in bovine Andalusian nonvaccinated herds are nonexistence of specific cattle infrastructure (OR: 3.07), beef crossbreeding (OR: 7.90), affiliation with Livestock Health Defence Associations (OR: 2.57), a history of reproductive disorders (OR: 8.39), external replacement (OR: 2.74), proximity to an urban area (OR: 6.11) and herd size (41.98). To control for confounding effects, a binomial logistic regression model was developed. From this regression, BHV1 infections are concentrated in large herds, with external replacement, located close to urban areas. This is the first published report on BHV1 prevalence in the South of Spain.Additional key words: dispersion, infectious bovine rhinotracheitis, logistic regression, multivariate model. Resumen Seroprevalencia y factores de riesgo asociados a la infección por el Herpesvirus Bovino tipo 1 (BHV1) en rebaños bovinos no vacunados de AndalucíaDesde enero a abril de 2000 se ha realizado un estudio epidemiológico y serológico sobre la infección por el herpesvirus bovino tipo 1 (HVB1) en Andalucía, donde se tomaron un total de 4035 muestras de sangre procedentes de 164 rebaños, donde además se cumplimentó un cuestionario que incluye variables potencialmente asociadas a la infección. Mediante un kit ELISA de bloqueo se evaluó la presencia de anticuerpos frente al HVB1. El valor de odds ratio (OR) (probabilidad que tiene un suceso de ocurrir en un grupo expuesto a un factor en relación a la probabilidad en un grupo no expuesto) cruda para la vacunación frente al HVB1 es de 9,8 (IC 95%: 8,[3][4][5][6][7][8][9][10][11]7). Al haberse vacunado las granjas grandes, que fueron eliminadas, el estudio es representativo sólo de granjas de pequeño y mediano tamaño. La prevalencia real en animales no vacunados es del 45,7%, mientras que la dispersión es del 70,4%. Los factores de riesgo detectados son: inexistencia de infraestructuras específicas (OR: 3,07), animales de razas no puras (OR: 7,90), pertenencia a asociaciones de defensa sanitaria (OR: 2,57), historial de trastornos reproducti...

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Rinotraqueitis infecciosa bovina y virus respiratorio sincitial bovino en ganado de lidia en salamanca

et al. 2012

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Se ha realizado un estudio epidemiológico para conocer la prevalencia de dos agentes infecciosos comunes, IBR y BRSV, en 15 ganaderías bovinas de Lidia en Salamanca (Castilla y León, España). En 2006 se obtuvieron muestras sanguíneas de 286 animales, aparentemente sanos y sin problemas evidentes. Los análisis serológicos se realizaron utilizando la técnica de diagnóstico ELISA, obteniéndose una prevalencia por rebaño del 99,92 % e intra-rebaño del 85,29 % para la IBR, mientras que para el BRSV se obtuvieron un 82,23 % y del 89,69 % respectivamente.

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Bovine herpesvirus 1 (BHV1) seroprevalence in the breeding cattle population of the veneto region: prospects for the implementation of a control programme

Cited by 5 publications

References 13 publications

Prevalence of serum antibodies to bovine herpesvirus-1 in cattle in Galicia (NW Spain)

Prevalence of serum antibodies to bovine herpesvirus-1 in cattle in Galicia (NW Spain)

Seroprevalence and risk factors associated with bovine herpesvirus type 1 (BHV1) infection in non-vaccinated cattle herds in Andalusia (South of Spain)

Rinotraqueitis infecciosa bovina y virus respiratorio sincitial bovino en ganado de lidia en salamanca

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