上厕所后未洗手，公认是助长最近诺罗病毒，又称作冬季呕吐病毒（winter vomiting bug）蔓延的主因，这种病毒在人传人前，得先经历医生所说的“粪口途径”(faecal-oral route)的接触过程。
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winter vomiting bug
冬季呕吐虫
以上为机器翻译结果，长、整句建议使用 人工翻译 。
All non-urgent surgery was cancelled and some wards have been affected by the winter vomiting bug.
BBC: More snow showers due in county
Levels of the winter vomiting bug norovirus have gone down for a second week, latest figures show.
BBC: Drop in level of norovirus winter vomiting bug cases
Cases of the winter vomiting bug norovirus have exceeded 1.1 million, figures for England and Wales suggest.
BBC: Winter vomiting cases at 1.1 million
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