Greatly reduce airborne/droplet transmission in health care facilities with negative ions.
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The following is an idea which might limit airborne transmission in hospitals, skilled nursing facilities, assisted living facilities, etc. I would hope that someone could look into it and, if they find it plausible, pursue implementation of it.
The concept involves the use of negative ions.
In a nutshell, the theory behind negative ion generating devices is that the negative ions that are created weigh down any particulates in the air (including microorganisms) and cause them to fall to the ground. This type of effect can be seen in the approach of a strong rain storm with considerable lightning; the air suddenly becomes discernibly fresh and clean because of the negative ions created in the storm. If negative ion generators can indeed cause microorganisms (including viruses) to fall to the ground, they have great potential for limiting the exposure of people in buildings to any airborne Covid-19 in the area. It might also be possible that the generators can kill viruses directly. The proposed types of buildings are hospitals, skilled nursing facilities, assisted living facilities and other health related facilities.
A basic objections to negative ion generators is that some machines create ozone as a byproduct, a substance which can be deemed harmful at high levels. As an aside, high amounts of ozone in the air can effectively kill all viruses in the area, but you could only do this with empty rooms or wings of buildings.
I do not have a final and definitive answer regarding the feasibility of such devices. But, if others were to do intensive research and conclude that these devices could be a significant contribution in the fight against Covid-19, I would envision that high capacity units that do not emit ozone could be installed in the facilities as mentioned above. It may not be feasible to place devices in every room of a facility, but at least hallways and public areas should be considered. Studies could be performed which look at the infection rate at facilities with the devices and those without the devices.
At some point, private companies could consider installing these devices in locations they deem worthwhile. Then we have airplanes, buses, subways, auditoriums, etc.
All I am asking at this stage is for someone to confirm whether or not the overall concept has merit and, if so, get governmental experts to thoroughly investigate negative ion generators and determine whether they truly offer any hope.
The following a some pertinent links to help in this regard.
Successful study with viruses: https://www.nature.com/articles/srep11431
Ionizer destroys acinobacter in hospital: https://www.newscientist.com/article/dn3228-air-ionisers-wipe-out-hospital-infections/
An aircraft ionization system: https://www.ainonline.com/aviation-news/business-aviation/2015-10-09/ionization-system-removes-pathogens-cabin-air
Active against Salmonella: https://agresearchmag.ars.usda.gov/2000/mar/salm
A listing of studies compiled by a manufacturer: https://www.surroundair.com/negative-ions/
Effective against Newcastle virus: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2130090/pdf/jhyg00043-0066.pdf
This discusses only ozone: http://www.china.org.cn/opinion/2020-02/26/content_75747237_4.htm ; https://www.ozonepartner.com/poultry
I have just created a rough outline of the concept and tried to get numerous Governmental authorities (and some NGO's) to investigate the potential.
It's simple: simply notify government and NGO officials at all levels of the concept and urge that they investigate it, at the minimum. Even better, if you personally know someone who has the ear of such officials, ask that they broach this concept with them.
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