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首页> 外文期刊>Spanish Journal of Agricultural Research >Seroprevalence and risk factors associated with bovine herpesvirus type 1 (BHV1) infection in non-vaccinated cattle herds in Andalusia (South of Spain)
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Seroprevalence and risk factors associated with bovine herpesvirus type 1 (BHV1) infection in non-vaccinated cattle herds in Andalusia (South of Spain)

机译：安达卢西亚（西班牙南部）未接种牛的牛群中与牛疱疹病毒1型（BHV1）感染相关的血清阳性率和危险因素

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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.
机译：2000年1月至2000年4月，在安达卢西亚进行了牛疱疹病毒1（BHV1）感染的流行病学和血清学调查。从164个牛群中采集了4,035份血液样本。为每只牛群填写了一份调查表，其中包括可能与感染相关的变量。获得血清样品以鉴定特异性BHV1抗体，并使用封闭ELISA测试进行测试。接种疫苗的观察到的原始数据的赔率比（OR）（相对于未暴露组中发生的特定事件在暴露组中发生的机会的估计）为9.8（95％置信区间：8.3-11.7）。接种疫苗的人群包括大型奶牛场。这项研究只能被视为安达卢西亚未接种疫苗的中小型奶牛场和牛肉场的代表。在安大路西亚未接种牛的牛群中，BHV1病毒的真正血清阳性率达到个人的45.7％，牛群的70.4％。牛安达卢西亚未接种牛群中BHV1感染的危险因素是不存在特定的牛基础设施（OR：3.07），牛肉杂交（OR：7.90），与家畜健康防御协会的隶属关系（OR：2.57），生殖系统疾病的病史（OR： 8.39），外部替代（OR：2.74），邻近市区（OR：6.11）和畜群规模（41.98）。为了控制混杂效应，开发了二项逻辑回归模型。通过这种回归，BHV1感染集中在大批牛群中，并通过外部替代品靠近城市地区。这是西班牙南部关于BHV1流行的第一份公开报告。

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