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Message
re: Coronavirus Disease 2019 (COVID-19) ***W.H.O. DECLARES A GLOBAL PANDEMIC***
Posted on 2/23/20 at 10:43 am to Volvagia
Posted on 2/23/20 at 10:43 am to Volvagia
quote:
Except that wasn’t caused by a recirculating air system, but one that the air system itself was the source.
How did it get into the air system?
2
Posted on 2/23/20 at 10:51 am to S1C EM
It didn't. Legionella is a bacteria that was part of a poorly controlled cooling tower (Poor bio-control). The drift from the hotel's cooling tower was covering the Legionnaires that were gathering in front of the hotel.
C9
C9
Posted on 2/23/20 at 11:16 am to S1C EM
quote:
How did it get into the air system?
It’s endemic in nature. Literally no way to know how. It could be as simple as someone setting a tool in the dirt outside and then touching the drip basin inside. It certainly wasn’t a cough droplet getting sucked in and condensing on the coils though.
The point that using a disease without as far as I know a single demonstrated person to person infection is a very bad example of “recirculating air” dangers. I can be in a plane full of overtly symptomatic individuals with it for six hours and I wouldn’t get infected.
You get infected by a contaminated water source (drip basin, cooling towers pools, tap water) getting heavily aersolized and breathing in the mist.
Drinking it doesn’t do it.
As a result, modern AC system take measures to not allowing that to happen, either by design or water treatment.
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