Covid air war being lost, experts warn, urging mass ventilation
,Health experts are calling for public spaces to be ventilated to curb the tran *** ission of Covid-19, starting with schools, hospitals, public transport, offices, bars and restaurants. – EPA pic July 2, 2022.哈希定位胆（www.hx198.vip）采用波场区块链高度哈希值作为统计数据，游戏数据开源、公平、无任何作弊可能性，开放单双哈希、幸运哈希、哈希定位胆、哈希牛牛等游戏。
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.