环境风险因素的空间建模影响德国绵羊施马伦堡病毒暴露的环境风险因素
Frederik Kiene1,2, Hannes Bergmann3, Martin Ganter1
1Clinic for Swine, Small Ruminants and Forensic Medicine, University of Veterinary Medicine Hannover, Foundation, Hannover, Lower Saxony, Germany, tiho-hannover.de.
Transboundary and emerging diseases
|February 23, 2026
概括
德国绵羊的斯马伦堡病毒 (SBV) 风险与牛群密度有关,而不是气候. 农场层面的因素和牛息地是传播的关键,而不是广泛的环境梯度.
科学领域:
- 兽医流行病学 兽医流行病学
- 亚博病毒学 亚博病毒学
- 空间分析 空间分析
背景情况:
- 施马伦伯格病毒 (SBV) 是一种由Culicoides传播的Orthobunyavirus,在欧洲各地的反动物中造成重大经济损失和生殖问题.
- 了解SBV传播驱动因素至关重要,特别是在密集管理的畜牧系统中,环境影响定义不佳.
- 评估SBV血清流行的空间变化需要调查土著温带地区的景观,气候和宿主可用性.
研究的目的:
- 调查景观,气候和宿主可用性对德国绵羊群SBV暴露风险的影响.
- 应用空间显式通用添加模型 (GAM) 和预测性风险映射来识别关键传输驱动因素.
- 确定环境因素在温带,密集管理的环境中解释SBV血清流行的程度.
主要方法:
- 利用了来自德国五个联邦州 (2017年秋季,2018年春季) 的70只绵羊群 (2723只动物) 的血清学数据.
- 采用了包含69个环境变量的空间显式通用添加模型 (GAM).
- 进行了预测性风险映射,以可视化SBV暴露风险的空间变化.
主要成果:
- 最终的GAM解释了SBV血清流行率偏差的50.6%.
- 牛群密度是最强的积极预测因素 (OR=1.01,p<0.001).
- 自然保护区覆盖面 (OR=0.13,p=0.015) 和最潮湿季度的夏季温度 (OR=0.95,p=0.021) 显示出负相关性. 没有检测到任何显著的空间聚类.
结论:
- 农场层面的因素,特别是牛群密度和相关的载体息地,对SBV传播比德国的广泛气候或土地使用梯度更为关键.
- 扩散的空间模式表明,德国的反动物对Culicoides传播的病毒具有普遍的脆弱性.
- 这些发现支持有针对性的监测和以农场为中心的病媒控制策略,该模型框架有助于未来的树冠病毒风险评估.
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