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新冠肺炎的威力，相信英国民众近日深有感受。继之前副卫生部长与王储查理斯确诊后，周五首相约翰逊及卫生部长夏国贤双双宣布确诊。到底新冠肺炎的威力有多强大呢？有英国学者指，新冠肺炎的传播力是普通流感的3倍。

伦敦大学学院教授蒙哥马利指，倘若有1人感染新冠肺炎，该名患者平均能够传染给1.3至1.4人。而倘若受第一名患者传染的人继续与人近距离交流接触，继续到处播毒，继续传染给其他人，去到第10层就已经有5万9000人因为第一名患者而受到感染。所以，蒙哥马利呼吁民众要保持社交距离，不要忽视新冠肺炎的威力。

另一方面，新冠肺炎下，专家呼吁民众洗手至少20秒才可抗疫。来自澳洲葛里菲斯大学的专家则提醒，人类平均每天触碰手机达2617次，因此除了勤洗手外，也要每天清洁手机。

对于有研究指，新型冠状病毒在特别环境下，能在光滑的玻璃及塑胶上存活9天，传染病及传播风险专家克米伦解释，有关病毒可在任何物件表面生存，且愈是湿润，其生存时间就愈长。

麦克米伦建议，每次把手机放在某处后，应清洁手机，亦应避免随处摆放手机。他另提议，每当别人接触自己的手机时，也要使用至少有60%或70%酒精成分的洗手液或镜片清洁剂等清理手机。