#COVID19 virus spreads most easily in indoor spaces, especially in settings with poor ventilation. Watch this video to find out why 👇 pic.twitter.com/ZHrAWWPyrY— World Health Organization (WHO) (@WHO) July 28, 2021
#COVID19 virus spreads most easily in indoor spaces, especially in settings with poor ventilation. Watch this video to find out why 👇 pic.twitter.com/ZHrAWWPyrY