When New York Governor Andrew Cuomo announced last week that malls in New York could not reopen until they installed high-efficiency particulate air filters capable of trapping the virus that causes Covid-19, Harvard environmental health researcher Joseph Gardner Allen was thrilled.
원문출처 : https://www.cnn.com/2020/07/07/health/covid-19-air-conditioning-ventilation-wellness-scn/index.html
원문출처 : https://www.cnn.com/2020/07/07/health/covid-19-air-conditioning-ventilation-wellness-scn/index.html