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海外再不戴口罩，1.9万家新增口罩业务的公司要哭了?
source link: https://tech.sina.com.cn/roll/2020-04-06/doc-iimxxsth3875536.shtml
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来源：猎云网当地时间4月3日，世卫组织召开新冠肺炎例行发布会，称正在研究是否建议公众在公共场合佩戴口罩。此前，世卫组织的建议是正确洗手以及与他人尽量保持一米以上距离等措施，不包括佩戴口罩。美国疾病控制和预防中心则修改了其关于美国民众佩戴口罩
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