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Description: Ian Robertson M.Arch. on Twitter: "Looking at BC school reopening guide references: There is a crucial difference between them ... 2020: "There is NO evidence that suggests the virus is spread through the ventilation system" The engineer has since updated this to say: 2021: "There IS evidence" Big Difference!"
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Subject: Ventilation, Hasenkox, Kyle , American Society of Heating, Refrigerating and Air-Conditioning Engineers
Group: Education, K to 12
Creator: Robertson, Ian
Publisher: Robertson, Ian, Ian Robertson M.Arch. | @ianwrob
Coverage: British Columbia
Format: Twitter post, Image
Date: 2021-09-10
Relation: ispartof:https://twitter.com/ianwrob/status/1436519097110392835/
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