该委员会将评估病毒是否能喷射到比之前预期更远的距离。美国的一项研究表明,咳嗽喷出的飞沫传播距离可达6米,打喷嚏可达8米。
The panel's chair, Prof David Heymann, told BBC News that the new research may lead to a shift in advice about masks.
专家委员会主席大卫·海曼教授告诉英国广播公司资讯频道说,这项新研究可能会改变我们对戴口罩的建议。
He said that if the evidence is supported, then "it might be that wearing a mask is equally as effective or more effective than distancing."
他说,如果有证据支持,那么“戴口罩可能和保持距离一样有效,甚至更有效”。
But he adds a warning that masks need to be worn properly, with a seal over the nose. If they become moist, Prof Heymann explained, then particles can pass through. People must remove them carefully to avoid their hands becoming contaminated.
但他提醒说,需要正确佩戴口罩,口罩要有鼻部密封条。海曼教授解释说,如果口罩受潮,微粒就可以通过。人们摘口罩时必须小心,以免手被污染。
He adds that masks need to be worn consistently.
他补充说,口罩需要一直佩戴。
"It's not on to wear a mask and then decide to take it off to smoke a cigarette or eat a meal - it must be worn full time," he said.
他说:“不能戴上口罩后,再摘掉口罩抽支烟或吃顿饭,而是必须一直戴着口罩。”
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