,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.ug开（kai）户（hu）（www.ugbet.us）开放『fang』环球UG代「dai」理『li』登录【lu】网址、会『hui』员『yuan』登录网“wang”址、环球UG会员〖yuan〗注“zhu”册、环球《qiu》UG代理开
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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.