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Real-world data show that filters clean Covid-causing virus from air

nature.com

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Re: Real-world data show that filters clean Covid-causing virus from air

#11

Post by cptskippy »

bradknowles wrote: post #8
peakaboo wrote: post #5

How are they going to make billions of profit from air filters?

Have you looked at the prices of HEPA filter machines? Check out the cost of IQAir units.

Those are like the Louis Vuitton of air filters. I think most people can get by with a Winx air filter.

Re: Real-world data show that filters clean Covid-causing virus from air

#13

Post by azinman2 »

cptskippy wrote: post #11
bradknowles wrote: post #8

Earlier quoted context omitted.

Have you looked at the prices of HEPA filter machines? Check out the cost of IQAir units.

Those are like the Louis Vuitton of air filters. I think most people can get by with a Winx air filter.

I don’t want a hospital I’m in to “just get by”…

Re: Real-world data show that filters clean Covid-causing virus from air

#14

Post by spqr0a1 »

throwawayboise wrote: post #6

Not surprising? HEPA filters have been known to be able to filter viruses for some time; it's maybe the main reason they were invented? Not sure about that though.

HEPA filters were developed for radioactive dust during the Manhattan Project. Only several years later did the technology get declassified and started being used in biology and medicine.

Re: Real-world data show that filters clean Covid-causing virus from air

#15

Post by throwaway984393 »

You can build your own high-flow HEPA filter for about $45:

  1x 20-inch box fan ($20)
  1x 20x20 MERV-13+ MPR-2400+ HVAC air filter ($20)
  1x roll of duct tape ($2.50)
Air particle meters and other testing show they work just as well as big expensive machines (it's just the filter doing all the work). This is indeed a dirt cheap way to improve overall health.

Re: Real-world data show that filters clean Covid-causing virus from air

#16

Post by weaksauce »

dragontamer wrote: post #10
_Microft wrote: post #9

Earlier quoted context omitted.

The disease that develops after being infected is called COVID-19 which means Co rona Vi rus D isease (first seen in 20) 19 . The virus that causes it is SARS-CoV-2 , the S evere A cute R espiratory S yndrom Co rona V irus 2 , which is one of many coronaviruses. The 2 is there because there was an earlier coronavirus caused disease (SARS) in 2002 for which the pathogen was called SARS-CoV(-1).

> which is one of many coronaviruses. There's only like 7 coronaviruses that have been discovered to infect a human. Three of which are SARS, MERS, and COVID19. Its pretty novel, all else considered.

I mean you are dropping the whole colds are coronaviruses too part though. though, the "cold" has a bunch of possible viruses that cause it (something like 200 different viruses) with the rhinovirus being one of the larger ways since it's so resistant to being inactivated comparatively to sars2 which only lasts for a day to three as a fomite vector, is neutralized by soap and water or 70% IPA. If covid had a viral vector like a rhinovirus that can last for months on surfaces in wide variety of conditions on surfaces and also spread via aerosolized particles it would have been a completely different pandemic that would have been far more deadly.

Re: Real-world data show that filters clean Covid-causing virus from air

#17

Post by sudosysgen »

azinman2 wrote: post #13
cptskippy wrote: post #11

Earlier quoted context omitted.

Those are like the Louis Vuitton of air filters. I think most people can get by with a Winx air filter.

I don’t want a hospital I’m in to “just get by”…

The machine is mostly just a question of convenience, as long as the flow rate is right it's the filter that does all the work, and those are relatively much cheaper.

Re: Real-world data show that filters clean Covid-causing virus from air

#19

Post by dragontamer »

throwaway984393 wrote: post #15

You can build your own high-flow HEPA filter for about $45: 1x 20-inch box fan ($20) 1x 20x20 MERV-13+ MPR-2400+ HVAC air filter ($20) 1x roll of duct tape ($2.50) Air particle meters and other testing show they work just as well as big expensive machines (it's just the filter doing all the work). This is indeed a dirt cheap way to improve overall health.

> 1x 20x20 MERV-13+ MPR-2400+ HVAC air filter ($20)

That's a MERV-13 filter, not a HEPA filter.

HEPA filters 99%+ of small (0.3um) particles per pass. A MERV-13 filter only filters like 60% per pass IIRC.

That means that a 1000 cu. feet of air through the HEPA filter will result in 990+ cu. feet of clean air. While the MERV-13 filter will only produce 600 cu. feet of clean air.

--------

A MERV13 filter would be good enough to improve most air, but its not HEPA and shouldn't be confused with it.

Re: Real-world data show that filters clean Covid-causing virus from air

#20

Post by auslegung »

throwawayboise wrote: post #6

Not surprising? HEPA filters have been known to be able to filter viruses for some time; it's maybe the main reason they were invented? Not sure about that though.

I have believed this for about a year, based on things I was reading at that time. I thought this was widely known because as you point out, that’s kinda their purpose. This article acknowledges that it was shown to be effective in lab settings and this is mainly about seeing those results in real life settings.

But come on, if anyone finds something that’s probably effective based on science and isn’t going to negatively affect anyone, let’s shout it from the rooftops. If schools had been given funding to improve air circulation and filtration as well as a local gym now does after a $500,000 upgrade, I’m sure many would feel better about sending their children to school.

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