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新冠肺炎爆发以来，香港接连出现确诊感染群组，及至周三(11日)，卫生署卫生防护中心表示，早前新华旅游的埃及旅行团，连同领队在内，全团9人确诊或初步确诊新冠肺炎，惟因上述人员均曾乘搭长途机，令人忧虑飞机播毒。

机械工程师卢觉强表示，飞机的中央冷气循环系统有可能播毒，如果机上有人感染新冠肺炎，其咳嗽带出的病毒便会经冷气系统流通，然后积存在滤芯，再传播给其他乘客。

他说,虽然飞机都会定期更换滤芯，但卢觉强认为，在新冠肺炎疫情之下，航空公司应加密更换滤芯，尤其是有乘客确诊，更应立即更换。

卢觉强认为飞机洗手间也是另一个高危地点，他指粪便会有病毒，所以厕板，甚至水龙头，只要是病人接触过的地方，都有机会成为病毒温床，所以要加强清洁消毒。

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