Risk factors for Aujeszky’s-disease seropositivity of swine herds of a region of northern Italy

Tamba, Marco; Calabrese, R.; Finelli, E; Cordioli, Paolo

doi:10.1016/s0167-5877(02)00028-4

Cited by 15 publications

(16 citation statements)

References 15 publications

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“…Management system, topographical features, the distance between farms, pig density, and pig farm density have been proven as relevant risk factors for ADV maintenance in domestic pig farms (Marsh et al 1991;Austin and Weigel 1992;Leontides et al 1994;Tamba et al 2002). Epidemiological studies on ADV have also been carried out in wild boar (Müller et al 1998;Lutz et al 2003), although the role of the domestic pig in the epidemiology of ADV in wild boar populations has not been assessed before.…”

Section: Introductionmentioning

confidence: 99%

Epidemiological risk factors of Aujeszky’s disease in wild boars (Sus scrofa) and domestic pigs in Spain

et al. 2008

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An Aujeszky's disease (AD) control and eradication campaign started in Spain in 1995, and as a result, AD virus (ADV) seroprevalences have notably diminished in Spanish domestic pig herds, but eradication has not yet been achieved. Since the presence of ADV in Spanish wild boar populations can impede schemes to eradicate ADV in domestic pig, we conducted analyses of risk factors and investigated associations between the patterns of ADV seroprevalence at the municipal level in the wild boar and the domestic pig, respectively, in south-central Spain. There was a clear influence of individual factors on the risk of wild boar to test positive to ADV. Concerning the domestic pig, higher ADV seroprevalences were observed with increasing numbers of pigs per farm. Indoor pig farms showed higher seroprevalences than open-air farms. Our results show that, at least at the study scale, the level of ADV seroprevalence in domestic pig farms is not influenced by the level of ADV seroprevalence in the coexisting wild boar populations. Also, there was no influence of domestic pigs ADV seroprevalence on the risk of wild boars to test seropositive. Finally, there was no evidence for a statistical association between ADV seroprevalence levels in wild boar and domestic pig at the municipal level in the study region. These findings are of interest for both veterinary and public health authorities. Nevertheless, more effort is needed in order to elucidate the nature of particular ADV outbreaks in domestic pigs in the study region due to possible contacts with wild boars, which will probably require a molecular approach.

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Section: Introductionmentioning

confidence: 99%

Epidemiological risk factors of Aujeszky’s disease in wild boars (Sus scrofa) and domestic pigs in Spain

et al. 2008

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“…Com a utilização do histórico das ações da Coordenadoria de Defesa Agropecuária no combate à DA, desde 2006, foi iniciado o trabalho que possibilitou a identificação do Foco 1. As criações de suínos nas quais se pratica a vacinação contra DA são um indicador da possível circulação viral, conforme pode ser observado em trabalhos de controle e erradicação realizados na Europa e nos Estados Unidos (12)(13)(14) . Em Santa Catarina, no ano de 2001, o programa de erradicação teve início a partir do inquérito epidemiológico em propriedades que praticavam a vacinação (9) .…”

Section: Resultsunclassified

“…Aliada às atividades de vigilância está à rapidez da comunicação do foco que, neste trabalho, foi imediata, por meio do Sistema Continental de Vigilância -SivCont. Para se obter êxito em ações de contenção de focos, existe a necessidade de rápida comunicação, pois países, estados, regiões ou municípios vizinhos devem ser informados do evento sanitário para que assim possam tomar ações preventivas, tais como controle de trânsito, rastreamento ou investigações epidemiológicas, entre outras (10,13,26) .…”

Section: Resultsunclassified

Descrição Das Ações De Vigilância Em Focos Da Doença De Aujeszky

Oliveira

Alexandrino

et al. 2015

Ciênc. anim. bras.

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ResumoA doença de Aujeszky (DA) é conhecida na suinocultura pelo seu grande impacto produtivo e econômico. Este trabalho teve como objetivo a descrição das ações de defesa sanitária animal utilizadas na identificação de focos dessa enfermidade. Foram selecionadas duas situações de foco de DA que ocorreram no Município de Cerqueira César, um caso apresentando somente animais sororreagentes (Foco 1) e outro em que havia animais com sinais clínicos da enfermidade (Foco 2). Estão descritos os métodos de identificação de focos utilizados nas ações de vigilância e o diagnóstico da situação epidemiológica encontrada. As medidas aplicadas na erradicação dos focos nos sistemas de produção de suínos infectados foram as prescritas na legislação de defesa sanitária animal e todos os focos identificados foram eliminados. Ao final, concluiu-se que as ações de defesa sanitária e a legislação em vigor foram eficazes, demonstrando que os sistemas de notificações das suspeitas da enfermidade são facilitadores das ações de vigilância. Palavras-chave: focos; Herpesvirus Suíno; legislação sanitária; suinocultura. AbstractAujeszky's disease (AD) is known for causing huge productive and economical losses in the swine industry. This study focused on describing the actions of the official animal health protection used on identification of AD outbreaks. Two outbreaks that occurred in Cerqueira César city were selected, a case presenting only seropositive animals (outbreak 1) and another one where there were animals with clinical signs of the disease (outbreak 2). The methods used to identify the outbreaks in surveillance actions and to diagnose the epidemiological situation were described. The measures implemented to eliminate the outbreaks in infected pig production systems were appointed in animal health protection laws and were able to eliminated all outbreaks identified. In

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“…(1999) reported that intensive obligatory mass vaccination did not stop ADV circulation in Northern Belgium. Several recent Italian studies (Martinello et al., 2000; Zanardi et al., 2000; Tamba et al., 2002) have criticized the effectiveness of the national control programme of AD in reducing the prevalence of ADV infection. Our study has analysed the temporal pattern of the infection rather than its prevalence, thus confirming the criticisms.…”

Section: Discussionmentioning

confidence: 99%

A Study of the Progress of the Aujeszky's Disease Control Programme in Italy Using Survival Analysis

Martini

Drigo

Pozza

et al. 2003

Journal of Veterinary Medicine, Series B

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A 3-year study (1997-2000) was performed on 294 swine herds from Italy, where a National Programme of Control of Aujeszky's Disease (AD) based on compulsory vaccination has been operative since 1997. Aim of the study was to evaluate the progress of this control programme using a survival approach applied to gE-seropositive herds at the beginning of the programme. The cumulative proportion of herds still gE-seropositive at the end of the study was 0.57. No significant difference in the probability of becoming gE-seronegative during the study period was found between herds of different type (breeding versus farrow-to-finish) whereas significant differences were seen between herds from different areas. The Cox's proportional hazards regression, performed on data from 79 herds, showed that the only risk factor significantly associated with a higher probability of becoming gE-seronegative is again the geographical location. Other risk factors considered in the analysis were: type of enterprise, type of replacement of animals, herd size, pig and pig herds densities around the farm, distance from the nearest pig herd and year of beginning of the vaccination with a gE-deleted vaccine.

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Risk factors for Aujeszky’s-disease seropositivity of swine herds of a region of northern Italy

Cited by 15 publications

References 15 publications

Epidemiological risk factors of Aujeszky’s disease in wild boars (Sus scrofa) and domestic pigs in Spain

Epidemiological risk factors of Aujeszky’s disease in wild boars (Sus scrofa) and domestic pigs in Spain

Descrição Das Ações De Vigilância Em Focos Da Doença De Aujeszky

A Study of the Progress of the Aujeszky's Disease Control Programme in Italy Using Survival Analysis

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