161–170 of 176 posts
Someone made an interesting point that we got rid of cholera by drinking cleaner water and that we'll get rid of Covid by breathing cleaner air.
Maybe this is pure science fiction but it would be amazing to see Covid alarms, if the virus was detected in the air.
Someone made an interesting point that we got rid of cholera by drinking cleaner water and that we'll get rid of Covid by breathing cleaner air.
Considering you’re exposed to water during limited times (and need to actually ingest it) but exposed to air 24/7 (or else you die) that doesn’t seem like a reasonable comparison. If someone standing in front of you sneezes, a filter in the HVAC isn’t doing anything to stop you from getting covid. I mean, isn’t airborne transmission still uncertain for Covid?
I don't think there's any uncertainty left in airborne transmission: https://www.forbes.com/sites/jvchamary/2021/05/04/who-corona...
Suspect that "These organisms are not typically thought to spread through the air" was not evidence-based.
What's the deal with "covid-causing virus" in the title? Is there some kind of virus relationship ala HIV/AIDS that I wasn't aware of?
COVID-19 is the name of the disease caused by SARS-CoV-2 virus. https://en.wikipedia.org/wiki/COVID-19 https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndr...
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…
I would think you’d get very, very close to 1000 cu of cleaner air, with only 1% of the particles of the input.
It’s not as if that 1000 cu feet has 1% particles.
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With the added bonus that it would be better for the students’ health generally and would likely improve overall educational outcomes. An awful lot of our handling of COVID has been farcical (a year and a half in, we’re still relying on cloth masks and obsessively sanitizing surfaces), but in the case of schools it’s veered toward absurdist/tragic.
The authorities have long since stopped recommending cloth masks and surface cleaning. Anyone still applying or recommending those methods isn’t up to date. There’s nothing farcical about recommending cloth masks and surface cleaning during the first few months of the pandemic when nothing was known about how the virus spread and when masks needed to be reserved for those on the front lines. The only farcical piece i…
Now this pandemic started around 2020, which is more than decade later.
So recommending cloth masks was and is indeed farcical. Doing it after recommending against mask usage is idiocy. And no, the world’s collective scientific understanding of masks didn’t change between 2020 and 2021.
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What data are you referring to? The protests and marches last year seem to be hard to ignore example of things that should have had more spread by these standards.
Those were outdoors with plenty of room for viral particulate to disperse. there has been a lot written about this, its called the infectious dose which is the amount of virus particulate needed for someone to become ill with the virus. I recommend pubmed or google scholar if you want a deeper dive. if you are having trouble visualizing how this works, imagine a perfume dispenser jetting out a fine mist, that's your…
So, I have seen a lot of these papers, but too much feels like post hoc justification. I'm game for being cautious, so I'm not really saying to do anything different, but I do want to urge way more caution in messaging than I'm seeing. It is fair and ok to talk of the uncertainty.
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After you read about the Amoy Gardens and SARS1, you will no longer think of it as hyperbolic. https://pubmed.ncbi.nlm.nih.gov/16696450/ >Abstract >Recent investigations into the March 2003 outbreak of SARS in Hong Kong have concluded that environmental factors played an important role in the transmission of the disease. These studies have focused on a particular outbreak event, the rapid spread of SARS throughout Am…
I assume those floor drains lacked a functional p-trap because I've read with covid that disease would spread through drains without a proper p-trap, but otherwise the p-trap prevents drains like toilets and sinks from stinking and allowing contaminated air through. P-traps can dry out though, but they stink if they do. Maybe that's what happened there? Edit: yes, that's the theory - floor drains with dry u-bends all…
The important takeaway is SARS 1 had significant fecal-oral transmission and not just respiratory.
And yet I'm supposed to believe that SARS 2 is respiratory only despite the fact that the government has detected SARS 2 in sewer systems, one of the early Covid symptoms is diarrhea, and SARS 1 had significant number of infections by fecal matter.
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note that phrase like "600ft³ of clean air" are misleading. filtration drops off rapidly with distance from the air purifier, so the fan would need to be quite oversized for a room to experience relatively even filtration. for most rooms, that wouldn't be comfortable, for both noise and draft reasons. i'm down with air purifiers for indoor particulate matter (i.e., air pollution), but they're not really going to make…
Yeah, that's what i dont get.. In germany they plan to filter air in classroom... Classroom are pretty big.. How big do they plan the fan to be?!?
(central) air filtration can be effective against harmful pollutants, but not really against infectious agents like corona.
Earlier quoted context omitted.
Those were outdoors with plenty of room for viral particulate to disperse. there has been a lot written about this, its called the infectious dose which is the amount of virus particulate needed for someone to become ill with the virus. I recommend pubmed or google scholar if you want a deeper dive. if you are having trouble visualizing how this works, imagine a perfume dispenser jetting out a fine mist, that's your…
Some of the marches that I went to... were less than airy, to be honest. Easily comparable to any ballgame I have been to. So, I have seen a lot of these papers, but too much feels like post hoc justification. I'm game for being cautious, so I'm not really saying to do anything different, but I do want to urge way more caution in messaging than I'm seeing. It is fair and ok to talk of the uncertainty.