#Ventilation

1/ This video on a classroom filled with plexiglass barriers is making the rounds. As the poster notes, it’s not a great student experience to be stuck in one of
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1/ Clean Air Delivery Rate (CADR). The CADR of a portable filtration system is:CADR = f x Q.f is the fractional removal efficiency of particles that pass through a device
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1/ Why universal mask wearing in buildings is importantFirst, the persons infected are unknown. So, if everyone wears a mask the infectors are also wearing masks. Second, everyone else (receptors)
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Here’s few reasons @krishgm 1) Govt want parents to work. They need to maintain the illusion that “Schools are safe”. If parents are in doubt they may not send their
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CDC TOO LOW—I told @mehdirhasan that CDC Director’s 450k death projection is an under projection of #COVID19 deaths. We could likely hit 500k+ by end of Feb. And we already
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Up to now the most recommended action to take when a person exhibits COVID-19-like symptoms has been to quarantine until s/he develop serious respiratory problems, and then take them to
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Bathrooms are a concern—because of toilet plumes. “Because a flush can release plume of aerosolized droplets in the air—and we know #SARSCoV2 can be spread in fecal matter—encountering toilet
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1/ AIR CLEANERS: recommendations from the scientists of what to use and what to avoid 2/ More details about how to remove the virus from the air (best ventilation, otherwise
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I watched this lecture from @UCDavisCOE about how COVID-19 spreads in spaces like cafes & restaurants. Thought I knew everything there is to know but I was wrong.Lemme share with
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Wales NHS Covid Crisis or Political Abuse of Special Laws?The Welsh Government has claimed the NHS in Wales is being Overwhelmed and with PCR Positives the highest in the country
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Interesting article on in-flight COVID transmission https://twitter.com/Jemma_Geoghegan/status/1346557476607549441 Passengers A and B were likely infected before the flight and passenger G infected after the flight at quarantine facility. P
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1/ This did not have to be.Over 100,000 Americans currently in hospitals with COVID-19 and over 210,000 new cases today. We are converging on and will soon surpass the 9/11
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WHO released a new "Scientific Brief" on Transmission of SARS-CoV-2 today. New recommendations are a mixed bag, some good to hear but others are a real problem. https://www.who.int/publications/i/item/modes-of-transmission-of-viru
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TAXI & TRANSIT RISK—We know #SARSCoV2 is airborne. But how survivable inside a car?Well, study now reports a car driven 15 minutes by a mildly infected #COVID19 driver (no
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BILL NYE is still the science show king. And he’s got a mask lesson for you. #MaskUp #COVID19 2) MASKS work. Mask and airborne science compilation video 3) Masks are
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WOW. Amazing tool to calculate #SARSCoV2 risk indoors w/ airborne aerosols: Mask?If so, what type of mask?How much ventilation?How many people?Speaking time?Speaking volume?Size of room?Ceiling height? Duration in room?#COVID19https://www.z
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