The Coronavirus

[David Horn]

(07-08-2020, 08:52 PM)Eric the Green Wrote:

(07-08-2020, 12:29 PM)David Horn Wrote:

(07-08-2020, 05:39 AM)Bob Butler 54 Wrote: CNN reports WHO confirms there's 'emerging evidence' of airborne transmission of coronavirus

This doesn't seem like news.  The major purpose of masks is to vastly decrease the wearer's putting coronavirus spray in the air.  Masks have been a big part of fighting the bug since Wuhan.

I think the new info here is the degree to which the virus can travel and be persistent.  If 6 feet is simply not enough, and the virus hangs in the air for hours, we're in a new ballgame.  Most of the indoor recommendations become moot, except for masking.

Ventilation may help for indoor places, reducing that persistence, so I heard.

The only limitation to ventilation is how the waste air is handled. If it's a case of full replacement every X minutes, then the cost of heating or air conditioning has to be considered.  Commercial aircraft fully circulate the air in the passenger cabin every 30 seconds, but it's scrubbed by a multistage HEPA filter prior to being reintroduced to the cabin.  That's a best practice that could also be used in buildings if the owners are willing to invest in it.  So far, no recommendation from the CDC or anyone else in authority.