@WHO: To limit exposure to #COVID19 adequate ventilation & increased airflow should be supplied to occupied spaces, if possible. Clean, natural ventilation (opening 🪟) should be used inside buildings where possible, without re-circulating the air. 👉 https://t.co/Cs7uxQRRMN https://t.co/DYdcR6hphy

@WHO: To limit exposure to #COVID19 adequate ventilation & increased airflow should be supplied to occupied spaces, if possible. Clean, natural ventilation (opening 🪟) should be used inside buildings where possible, without re-circulating the air. 👉 https://t.co/Cs7uxQRRMN https://t.co/DYdcR6hphy

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