,Health experts are calling for public spaces to be ventilated to curb the transmission of Covid-19, starting with schools, hospitals, public transport, offices, bars and restaurants. – EPA pic July 2, 2022.皇冠线上开户（www.hg108.vip）是一个开放皇冠正网即时比分、皇冠线上开户的平台。皇冠线上开户平台（www.hg108.vip）提供最新皇冠登录，皇冠APP下载包含新皇冠体育代理、会员APP。
THE world is still not using one of its most effective weapons against Covid – properly ventilating public spaces – more than two years into the pandemic, experts warn.
At the moment there is a “fragile, armed peace” with Covid-19, said Antoine Flahault, director of the Institute of Global Health at the University of Geneva.
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