Week-end Wrap – Political Economy – August 28, 2022
by Tony Wikrent
The pandemic
[Emerging Themes in Epidemiology, via Naked Capitalism Water Cooler 8-24-2022]
From 2006, still germane: “There are situations where there can be a real or perceived divergence between individual and community benefits of vaccination. This divergence may occasionally be based upon current scientific evidence and may exemplify the need for overriding individual autonomy. Use of the oral polio vaccine (OPV) in the US in the early 1990s is such an example. The sustained use of OPV led to the elimination of polio in the US, with the last cases of wild polio reported in 1979. While OPV is extremely safe and effective, the vaccine very rarely caused vaccine associated paralytic polio (VAPP) resulting in 5–7 cases of VAPP annually with near universal use of OPV in the US. Once polio had been effectively controlled in the US, preventing the indigenous transmission of polio, the risks of the vaccine (VAPP) may have been greater than the risk of disease. Assuming the individual does not travel to a region where polio is still endemic, a roughly one in a million risk of VAPP is highly unlikely, but still greater than the risk of wild polio. Yet, if a substantial number of individuals were not vaccinated because of this individual risk/benefit analysis, polio would likely have been reintroduced into the US, as the disease is only a plane ride away, leading to a tragedy of the commons [7]. While this divergence in individual versus community benefits was short-lived (the US switched to the inactivated polio vaccine that can not cause VAPP), such a situation can cause a dilemma for parents, health care providers and policy makers.”
"Barriers to Air Purifiers in Schools Rebuttal Matrix"
[Twitter, via Naked Capitalism Water Cooler 8-22-2022]
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”How a $100 box is changing the way people protect themselves against coronavirus”
[Dallas Morning News, via Naked Capitalism Water Cooler 8-24-2022]
“Enter the Corsi-Rosenthal Box, a do-it-yourself air filtration system with North Texas ties that has taken the internet by storm. Each box typically costs under $100 to make and is more effective than other, pricier options like High Efficiency Particulate Air filters. The simple contraption consists of a box fan, four MERV13 furnace filters that can be purchased online or in store, some cardboard and strips of tape. It’s the brainchild of air quality researcher Richard Corsi, dean of engineering at the University of California, Davis, and Jim Rosenthal, CEO of Texas-based company Tex-Air Filters. …. The White House recognized the need for better ventilation and launched the Clean Air in Buildings Challenge in March to call on building operators, like schools and companies, to up their inside air quality. But interest in such investments has been weak, even with billions of dollars in federal COVID-19 funding for schools that can be used to upgrade ventilation systems. Portable air filters can make up for outdated ventilation systems, although they tend to come with hefty price tags. Standalone devices that use HEPA filters can cost upwards of $300 to $400, and that doesn’t include the price of filter replacements. So when the DIY air filter prototype – designed by Corsi and first constructed by Rosenthal in the summer of 2020 – worked, the two were elated. With MERV13 filters making up each side of the cube, the box fan on top pulls air through the filters and blows clean air out of the top. In a 700-square-foot classroom with nine-foot ceilings, a Corsi-Rosenthal Box on the highest fan setting can add the equivalent of about seven-and-a-half to eight air changes per hour, Corsi said. ‘If we started at two air changes per hour and we added eight air changes per hour, we’re roughly getting about an 80% reduction in inhalation dose with that single Corsi-Rosenthal Box,’ he said. ‘That’s a huge reduction. That’s like everybody wearing pretty decent masks in the classroom.'”