1/Here is my take. I was panicked back in March when COVID hit because I did not understand the transmission route and how to reduce my risk of getting this disease. Now I do understand.
2/I am sending my kids back to hybrid school 2 days a week because I live in Colorado and we have a sane Governor who declared a state-wide mask mandate. If you are visiting my state you better be here with a mask and you better wear it - or go home. @GovofCO
3/However - I also fully expect despite all my precautions that I will get COVID. And a major reason is because our federal government and specifically the leader of our country has beyond messed this up. It is horrifying and embarrasing.
4/I am extremely grateful to the medical community for working so hard to sort out how to treat people with COVID and to keep them from dying at such high rates.
5/Also grateful to the many out there who have faith in science and who listen to those of us with expertise in public health, indoor environmental quality & airborne infectious disease control. You are helping to stop the spread of the disease, keeping yourself and others safe.
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"This position document discusses the role of indoor #CO2 in the context of building ventilation and IAQ based on ASHRAE’s long involvement with those topics as well as the interests of its members and stakeholders."
"The positions stated within address the use of #CO2 as a metric of #IAQ and ventilation, the impacts of CO2 on building occupants, the measurement of CO2 concentrations, ..."
I keep wondering...why have so many (schools) thrown $$$ at ionization without any scientific evidence that it works, yet are scared of upper room UV lamps because it might be installed/maintained wrong; but there is solid science behind UV for disinfecting air.
We know how to do this. The first test was by some infectious disease docs wanting to disrupt measles transmission in schools. So they installed upper room UV. Guess what?
“this virus is one of the easiest, by far, to kill with UV light,” said senior author Karl Linden, #CUBoulder professor of environmental engineering. colorado.edu/today/2021/10/…
“It takes a very low dose. This indicates that UV technology could be a really good solution for protecting public spaces.”
Germicidal UV at 254 nm commercially available now for upper room use in spaces such as restaurants, homeless shelters, hospital ERs, schools etc.
Very interesting study just published! Airborne SARS‐CoV‐2 surveillance in hospital environment using high‐flowrate air samplers and its comparison to surface sampling onlinelibrary.wiley.com/doi/full/10.11…
findings show air sampling as a successful tool for environmental surveillance of airborne SARS-CoV-2 in hospitals
Opt for higher air sampling flowrate-it improves the chance of successful airborne SARS-CoV-2 surveillance especially in sites that are highly ventilated
Check out our great new paper led by Dr. Wagner: Modeling the impacts of physical distancing and other exposure determinants on aerosol transmission. Glad to be a part of this analysis, with amazing colleagues Drs. Sparks, Chen, Waldman and Dr. Macher oeh.tandfonline.com/doi/full/10.10…
a particle size-dependent aerosol release model was developed to assess impact of near-field transport of infectious aerosol. This is essentially what is happening when you are standing close to someone that is infectious...
we find that short-range (proximity) and long-range (background) transmission is additive and so both must be mitigated at the same time.
ABSTRACT: Outbreaks from choir performances, such as the Skagit Valley Choir, showed that singing brings potential risk of COVID-19 infection. There is less known about the risks of airborne infection from other musical performance,
such as playing wind instruments or performing theatre. In addition, it is important to understand methods that can be used to reduce infection risk. In this study, we used a variety of methods,