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Inactivation of Murine Norovirus Suspended in Organic Matter Simulating Actual Conditions of Viral Contamination
Food and Environmental Virology ( IF 3.4 ) Pub Date : 2021-07-30 , DOI: 10.1007/s12560-021-09493-x
Eric Jubinville 1 , Maryline Girard 1 , Mathilde Trudel-Ferland 1 , Ismail Fliss 1 , Julie Jean 1
Affiliation  

Foodborne viral illnesses are frequent worldwide and costly for the society. Human norovirus is one of the most common causal agents. Although some norovirus genotypes can now be cultured, surrogates are still used for inactivation studies. The aim of this study was to evaluate the effects of different organic loads individually (artificial feces, real fecal matter, ASTM tripartite organic load, fetal bovine serum) on the efficacy of three highly used sanitization treatments (thermal inactivation, peracetic acid and sodium hypochlorite treatment) using murine norovirus 3 in solutions and surfaces. Based on plaque-forming units, we show that organic matter protects murine norovirus 3 against thermal inactivation (viral reduction of ~ 1 log compared to 2.67 with PBS). However, there was a low-level but significant protection against peracetic acid (viral reduction of ~ 2 log compared to 2.85 with PBS) and none in the presence of sodium hypochlorite. Our study showed that the tested organic matters do not behave similarly depending on the treatments, especially with heat treatments, which showed a higher protection. Furthermore, Feclone ™ artificial feces mimicked some aspect of real fecal matter and may be used instead. Our results will be helpful to researchers undertaking viral inactivation studies in which an organic matrix is used to simulate actual conditions of human norovirus environment.



中文翻译:

模拟病毒污染的实际情况,灭活悬浮在有机物中的鼠诺如病毒

食源性病毒性疾病在世界范围内很常见,对社会来说代价高昂。人类诺如病毒是最常见的病原体之一。虽然现在可以培养一些诺如病毒基因型,但替代物仍用于灭活研究。本研究的目的是评估不同有机负荷(人工粪便、真实粪便、ASTM 三方有机负荷、胎牛血清)对三种高度使用的消毒处理(热灭活、过氧乙酸和次氯酸钠)效果的影响处理)在溶液和表面中使用鼠诺如病毒 3。基于噬斑形成单位,我们表明有机物保护鼠诺如病毒 3 免受热灭活(病毒减少约 1 log 与 PBS 的 2.67 相比)。然而,对过氧乙酸有低水平但显着的保护作用(与 PBS 的 2.85 相比,病毒减少约 2 log),而在次氯酸钠存在下则没有。我们的研究表明,所测试的有机物在不同的处理中表现得并不相似,尤其是热处理,显示出更高的保护作用。此外,Feclone ™ 人造粪便模仿了真实粪便物质的某些方面,可以代替使用。我们的研究结果将有助于研究人员进行病毒灭活研究,其中使用有机基质模拟人类诺如病毒环境的实际条件。尤其是热处理,显示出更高的保护。此外,Feclone ™ 人造粪便模仿了真实粪便物质的某些方面,可以代替使用。我们的研究结果将有助于研究人员进行病毒灭活研究,其中使用有机基质模拟人类诺如病毒环境的实际条件。尤其是热处理,显示出更高的保护。此外,Feclone ™ 人造粪便模仿了真实粪便物质的某些方面,可以代替使用。我们的研究结果将有助于研究人员进行病毒灭活研究,其中使用有机基质模拟人类诺如病毒环境的实际条件。

更新日期:2021-07-30
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