COVID-19 can be spread by building ventilation, argue Canadian researchers working on an HVAC
COVID-19 can be spread by building ventilation, argue Canadian researchers working on an HVAC
BY TOM BLACKWELL at the National Post
ORIGINALLY PUBLISHED: APR 26, 2020
https://www.google.com/amp/s/nationalpost.com/health/covid-19-likely-spread-by-building-ventilation-say-canadian-researchers-working-on-an-hvac-fix/amp
"SNIP......
The outbreak of COVID-19 at a restaurant in the southern Chinese city of Guangzhou was a puzzle.
The suspected index patient was a visitor from the coronavirus’s epicentre in Wuhan. But the eight other customers who later tested positive were not sitting close enough for droplet transmission, and most of the patrons and staff avoided infection altogether.
A team of local scientists eventually came to an eye-opening conclusion about the episode: tiny particles of virus had hitched a ride on currents created by the eatery’s air-conditioning.
That runs counter to the prevailing view that the novel coronavirus is transmitted only by heavier “droplets.” But for a group of civil engineers at the University of Alberta, the finding was no surprise. In their world, they say, it’s well known that building ventilation systems are efficient disseminators of viruses and other pathogens, and they believe the COVID-19 bug is no exception.
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I can't imagine how hard that is for you both. I'm so lucky...my 84 years old mom has her own apartment 5 minutes from me. I do her shopping, pick up.her meds and we visit weekly on her patio with our masks on. I'll be praying for your dad. It will get better. 
