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comment by kleinbl00
kleinbl00  ·  1210 days ago  ·  link  ·    ·  parent  ·  post: PSA: Why Is the Risk of Coronavirus Transmission so High Indoors?

11 per hour if we leave the fart fans on. 8 if we don't. It wouldn't surprise me if european standards, due to cubic meters per minute, work out to 9 airchanges for hospitals while American standards, due to cubic feet per minute, work out to 8.

If this was a hospital-based study they may have just assumed "hospital ventilation" which, for basic-bitch exam rooms, emergency rooms and recovery rooms, is at 8 air changes per hour in the US.