对比两个海水温度,用于从中净化人类诺罗病毒
Françoise S Le Guyader1, Joanna Ollivier1, Sylvain Parnaudeau1
1Ifremer, U. Microbiologie Aliment Santé Environnement, LSEM/RBE, Nantes, France.
Journal of food protection
|November 15, 2024
概括
较高的海水温度加快了从中去除诺罗病毒的速度,但人类诺罗病毒仍然是一个风险. 这项研究研究了温度对中诺罗病毒消除的影响,发现更温暖的条件可以提高净化效率.
科学领域:
- 海洋微生物学 海洋微生物学
- 食品安全 食品安全
- 病毒学 病毒学
背景情况:
- 贝类的消费是胃肠炎爆发的常见原因之一.
- 目前的净化方法有效地去除细菌,但不能去除人类的诺罗病毒.
- 中诺罗病毒的污染对公众健康构成重大风险.
研究的目的:
- 为了确定海水温度对中诺罗病毒消除的影响.
- 为了比较8°C和18°C的净化效率.
- 评估不同诺罗病毒基因组在净化过程中的持久性.
主要方法:
- 被含有诺罗病毒的原始污水污染了.
- 净化是在受控的海水温度 (8°C和18°C) 下进行的.
- 量化RT-qPCR被用于量化组织中的诺罗病毒基因组副本.
主要成果:
- 诺罗病毒基因组副本减少1个日志需要41天在8°C和24天在18°C.
- 受到野外污染的在18°C (21-23天) 时表现出类似的净化时间.
- 诺罗病毒基因组I表现出比基因组II更大的持久性,特别是在早些时候的季节样本中.
结论:
- 升高的海水温度显著提高了中诺病毒的消除.
- 更温暖的净化条件减少了减少诺罗病毒所需的时间.
- 诺罗病毒基因组和季节性变异影响消除率,凸显了贝类安全的复杂性.
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