多种兽医相关病毒的热失活:环境条件,表面类型和有机矩阵的影响
Isac Junior Roman1,2, Ingryd Merchioratto1,3, Renata Nobre da Fonseca1
1Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University (OSU), Stillwater, OK 74078, USA.
Pathogens (Basel, Switzerland)
|December 31, 2025
概括
潮湿的热能有效地去污染畜牧环境,在几分钟内使大多数病毒失活. 干燥的热量效果较差,湿度,有机物质和特定病毒 (例如猪病毒) 等因素会影响消毒的成功.
科学领域:
- 兽医病毒学 兽医病毒学
- 环境消毒科学 环境消毒科学
- 生物安全和生物安全.
背景情况:
- 热量是一种用于消毒畜牧环境的常见方法.
- 热消毒的有效性受到各种因素的影响,包括病毒类型,表面材料,水分和有机负载.
- 优化基于热的消毒协议对于防止畜牧业疾病传播至关重要.
研究的目的:
- 评估温度,暴露时间,湿度,表面类型和有机矩阵对兽医病毒无活化的影响.
- 为了确定畜牧环境的最佳热辅助净化参数.
- 确定特定的病毒例外情况和具有挑战性的净化场景.
主要方法:
- 在塑料,,和不钢表面测试了10种兽医病毒 (或代用病毒).
- 在50,60和70°C的温度下应用干燥和湿热.
- 引入有机基质 (血液,小麦,料) 和各种湿度水平.
- 使用TCID50试验量化病毒感染性.
主要成果:
- 湿热 (60-70°C) 在5分钟内使大多数包裹和非包裹病毒失活.
- 猪类帕维病毒 (PPV) 需要更长的暴露时间 (≥60分钟) 才能失活.
- 在70°C的24小时干燥热量允许一些病毒存活下来.
- 有机矩阵对无活化率的影响有所变化,有时加速,有时延长病毒生存时间.
结论:
- 潮湿的热量比干燥的热量要有效得多,可以在畜牧环境中快速消毒病毒.
- 消毒协议必须考虑湿度,有机负载和特定的病毒耐药性 (例如,PPV).
- 推参数包括大多数包裹病毒在高湿度下70°C持续≥10分钟,并根据特定挑战进行调整.
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