#ST #Asia Face shields, plexiglass barriers are a waste of money in Covid-19 battle: US aerosol expert January 12, 2022 9:59 AM Protective masks and proper ventilation are better protection against the spread of coronavirus. https://ift.tt/3GmHlaz Updates @TheWuhanVirus News @NewsRoomSG Discussions @WuhanCOVID & @sgVirus 81 views03:00
