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2) VENTILATION is key. Both ventilation and masks needed to reduce risk indoors. But most buildings not ventilated well enough.pic.twitter.com/qhz8cs0grH
— Eric Feigl-Ding (@DrEricDing) December 15, 2021
4) How is aerosol different from large droplets? aerosol study indicates that coronavirus is persistent and stable for many hours. Typical air exchange every 20 min to 4 hrs, depending on ventilation. #COVID19 pic.twitter.com/dUUjHriWge
— Eric Feigl-Ding (@DrEricDing) December 15, 2021
6) One neat trick about masks… they are AGNOSTIC / DON’T CARE about which variant it is! #Omicron resilient! Cool eh? #MaskUp https://t.co/v4asAq8nXD
— Eric Feigl-Ding (@DrEricDing) December 15, 2021
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10) schools everywhere need to ensure enough outdoor fresh air ventilation — if not, then add HEPA filters and other air disinfection… #COVIDisAirborne https://t.co/fJUP1TWp7n
— Eric Feigl-Ding (@DrEricDing) December 15, 2021
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weehingthong 