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#1 2020-09-02 03:28:13

uzhinzvorefn
Member
From: Netherlands, Noordwijk
Registered: 2020-08-19
Posts: 710

Why Aren’t We Talking More About Ventilation

Why Aren’t We Talking More About Ventilation.
– The Atlantic Zeynep wins again:  It seems baffling that despite mounting evidence of its importance, we are stuck practicing hygiene theater — constantly deep cleaning everything — while not noticing the air we breathe.
How is it that six months into a respiratory pandemic, we still have so little guidance about this all-important variable, the very air we breathe.
(tags: hygiene-theatre deep-cleaning covid-19 aerosols infection air viruses transmission zeynep-tufekci)  Fordite ‘also called Detroit agate, it’s created when layers of automotive paint build up and harden.
then it’s cut and polished like other rocks.’   (tags: fordite rock agate history paint recycling cars detroit)  Apple tells app devs to use IPv6 as it’s 1.4 times faster than IPv4 “when IPv6 is in use, the median connection setup is 1.4 times faster than IPv4.
This is primarily due to reduced NAT usage and improved routing.”  This is counterintuitive.
(tags: ipv6 ipv4 networking apple internet performance)  Aerosol and surface contamination of SARS-CoV-2 observed in quarantine and isolation care A paper in Nature, no less.

SARS-CoV-2 is airborne and spreads via aerosols

My pal Cassie’s colleague, Travis Longcore, writes:  ‘A team at the University of Nebraska collected surface and air samples from the hospital where 13 Covid-19 cases were isolated.
They found evidence of virus everywhere — high-volume air samples, low-volume personal samples worn by study personnel, room surfaces, personal items, and toilets.
The results are in gene copes (from SARS-CoV-2) per microL for surfaces and per L of air for airborne.
Others can do the calculations, but the personal air samples had the highest numbers, and exposure would depend on mask wearing (N95 in a hospital) and the amount of throughput (liters of air in and out of the body).
What you really don’t want to be doing is exercising (=high volume of air in and out) without a mask indoors with someone who is infected.
Or touching anything around them.
Or being inside with recirculated, unfiltered air with anyone who is infected (even if they don’t know it).’ (tags: aerosols nature papers covid-19 sars-cov-2 fomites contamination transmission infection air airborne).

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