相关实验视频
Updated: Aug 10, 2026

06:01
Optimized PCR-based Detection of Mycoplasma
Published on: June 20, 2011
54.0K
在乳牛初次检测后,Mycoplasma bovis感染的群体内传播
Marit M Biesheuvel1, Caitlin Ward2, Patty Penterman3
1Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada T2N4N1.
Journal of dairy science
|September 14, 2023
概括
牛群中Mycoplasma bovis的传播在各年龄组之间显著,其中母牛传给幼牛和母牛传给小牛的传播是关键驱动因素. 了解这些途径对于控制乳牛群中的疫情至关重要.
科学领域:
- 兽医流行病学 兽医流行病学
- 牛的传染病 牛的传染病
- 病原体传播动态 病原体传播动态
背景情况:
- 牛群中Mycoplasma bovis疫情带来复杂的传播挑战,特别是在不同年龄的人口统计数据之间.
- 在疫情爆发期间,对病原体在成年牛,幼牛和小牛之间传播的具体途径和速率的了解有限.
研究的目的:
- 估计群体内传播参数,并确定不同牛年龄组中Mycoplasma bovis的关键传播途径.
- 探索农场管理实践对Mycoplasma bovis传播动态的潜在影响.
主要方法:
- 使用了一种年龄分层的易感-感染-移除/恢复 (SIR) 模型,包含PCR,ELISA和培养试验的数据.
- 采样了20个荷兰乳牛场在成年奶牛中爆发了Mycoplasma bovis疫情,在12周内从奶牛,幼牛和小牛中收集样本.
- 通过使用费舍尔的精确测试和Poisson回归分析了传播和农场管理实践之间的关联.
主要成果:
- 估计的传播参数在群体和年龄组之间差异很大,高的R值表明了大量的二次感染.
- 牛对幼牛,牛对小牛和牛对母牛的传播被确定为最重要的传播途径,以及明显的小牛对小牛和小牛对幼牛的传播.
- 内部和外部的生物安全措施,以及间接的传播途径,与影响Mycoplasma bovis传播动态有关.
结论:
- 菌体牛的传播超出了成年牛的范围,影响了幼牛和小牛,大大促进了整体牛群的传播.
- 有效的控制策略必须针对所有年龄层的传播,并考虑生物安全和农场管理实践的影响.
- 识别和缓解特定的传播途径,如牛到幼牛和牛到小牛,对于管理Mycoplasma bovis疫情至关重要.
相关概念视频
Pulmonary Tuberculosis I
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Inhalation Anthrax
Anthrax is a zoonotic disease caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium. It primarily affects herbivorous animals but can be transmitted to humans through skin contact, ingestion, or inhalation of spores.Cutaneous anthrax, the most common form, typically results from direct contact with bacterial spores through skin abrasions and is generally less severe. Gastrointestinal anthrax results from eating undercooked or contaminated meat. It affects the mouth, throat, or...
Atypical Pneumonia
Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...

