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在2010年至2023年4月期间,加利福尼亚州的牛群中Anaplasma边缘血清阳性的血清发病率和危险因素

S Y Chen¹, A Hill², W Jackson²

¹Department of Population Health and Reproduction, University of California Davis, Davis, CA, United States.

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|January 15, 2026

概括

在加利福尼亚州的牛群中,Anaplasma边缘感染很普遍,单独影响了23.7%. 风险因素包括年龄较大,牛肉品种和季节性温度变化,这些都会影响阿纳等离子体传播.

科学领域:

兽医流行病学兽医流行病学
传染病生态学传染病生态学
动物健康监督动物健康监督

背景情况:

边缘性亚纳等离子体 (Anaplasma marginale) 是一种由传播的重要病原体,在全球范围内影响着牛的健康和生产力.
了解Anaplasma感染的患病率和风险因素对于牛群中有效的疾病管理至关重要.
加利福尼亚州多样化的气候和农业实践可能会影响Anaplasma marginale的流行病学.

研究的目的:

为了确定加利福尼亚州牛群中Anaplasma边缘感染的流行率.
确定与阿纳等离子体感染相关的关键风险因素,包括环境和宿主特定变量.
为了分析天气模式对Anaplasma血清流行的影响.

主要方法:

分析了来自773份提交 (2010-2023) 给加利福尼亚动物卫生和食品安全实验室的3684份Anaplasma测试结果.
利用时间序列分析来检测血清流行季节性趋势.
采用了概括估计方程 (GEE) 来识别风险因素,并绘制了Dermacentor abundance的地图.

主要成果:

总体而言,阿纳等离子体感染的个体水平真实患病率为23.7% (95% CI: 22.3 - 25.2%).
提交水平的流行率为38.3% (95% CI: 34.9 - 41.8%).
与干旱季节相比,在雨季观察到的血清发病率较低;与老牛,牛肉品种和特定季节性温度异常相关的感染几率增加.

结论:

亚纳等离子体边缘感染对加利福尼亚州的牛群造成了相当大的疾病负担.
季节性天气模式和宿主因素显著影响了阿纳等离子体传播动态.
调查结果强调需要有针对性的监测和控制策略,考虑到环境和宿主相关的风险因素.

关键词:

边缘性亚纳等离子体亚纳等离子体的形成.牛群是牛群,牛群是牛群,牛群是牛群.子子子子天气效应气候效应

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