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Wearing used mask might be worse than wearing no mask

The point isn't just about protecting the wearer from others. The point is that effectiveness goes down, and that can work both ways.

I support wearing masks, and wearing them effectively will provide better success. It's sad that so many people still want to dismiss everything that doesn't fit their agenda instead of keeping an open mind. People also believe in science until they don't.

Droplets vs particles? Really? Did we know that in the beginning? Does knowledge just stop when we get to a certain point? Distancing was originally 3 feet, then moved to 6 feet for 15 minutes. That's likely not true. Shields were effective, but now there are studies showing they aren't.

Just because we now believe droplets are the major physical method doesn't mean it can't be spread as particles. If wearing a mask is no big deal, wearing a clean mask should be no big deal, right?
Jw...why are shield not effective? How do you define effective?

I do not wear one fyi, jc
 
Very little? So they help, you're saying....

At worse case they help a little best case they noticably help. And you still foolish enough to even try to argue the topic. Smh derpity derp

Well, according the research in the OP, actually worst case is they are a net negative.
But, if you agree that they do very little, which the case data suggests is true, then stop trying to convince people they make a big difference.
Or, we would see a big difference in areas that have mandated masks. And, we do not.
 
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Well, according the research in the OP, actually worst case is they are a net negative.
But, if you agree that they do very little, which the case data suggests is true, then stop trying to convince people they make a big difference.
Or, we would see a big difference in areas that have mandated masks. And, we do not.
Worst case if you a moron....
 
Jw...why are shield not effective? How do you define effective?

I do not wear one fyi, jc

I don't define. I just observe the changing recommendations and report what I see.

Please note the different dates of the linked articles.

https://health.clevelandclinic.org/will-a-face-shield-protect-you-from-the-coronavirus/

https://www.healthline.com/health-n...ields-arent-a-safe-alternative-to-cloth-masks

https://www.bbc.com/future/article/20200806-are-face-shields-effective-against-covid-19
 
The way mask kings/queens attack those that don't wear masks you would think it was a silver bullet. I mean there was a video of a man stalking a women yesterday in Wal Mart because she wasn't wearing a mask. It's a really weird thing to see in our society.
There are very, very few encounters like this. Using rare exceptions does not bolster your foolish assertion.
 
I think we can all agree that California has been one of the most aggressive states in regards to mask mandates and restrictions.
Yet:

"Confirmed coronavirus infections and virus-related deaths are soaring in California, the nation's most populous state, setting new records as hospitals struggle to keep up with the onslaught of cases.

On Thursday, California reported 52,281 new daily confirmed coronavirus cases and 379 new virus-related deaths, according to state data.

According to the Los Angeles Times, which compiling its own coronavirus tally for the state, the number of Californians hospitalized due to the disease has broken records for 18 consecutive days.

The number of people in intensive care units because of COVID-19 continues to set records as well, the newspaper noted, with 14 straight days of increases.

Much of California remains under stay-at-home orders triggered by regions in the state that have less than 15% ICU availability.

The orders, which went into effect on Dec. 5, will remain in effect for at least three weeks."

https://www.npr.org/sections/corona...ality-program-as-state-sets-new-virus-records
CA is having a spike that exceeds their records. They are still not what Iowa, SD and ND were. Thank goodness for their mitigations or it would be even worse.
 
Even with a newly developed coronavirus vaccine currently rolling out and another likely on the way soon, health officials are matching their optimism about the coming months with a reminder that it's still very important to follow basic health guidelines such as social distancing, washing your hands, and wearing a mask. But when it comes to your PPE, there may be one major mistake you're making that could be putting you at risk. According to a new study, wearing a used or worn-out mask could actually be worse than wearing no mask at all in some cases. Read on to make sure your face covering is protecting you, and for more on staying safe in the pandemic, check out You're More Likely to Catch COVID in This Surprising Place, Study Finds.

The new research, published on Dec. 15 in the journal Physics of Fluids, comes from a team of scientists at California Baptist University and University of Massachusetts Lowell, who used a computer model to measure how masks affected the airflow and passage of particles to and from the wearer. The model also showed where particles landed on one's face, in the nasal passages, and how they are distributed into the lungs and pharynx.

The research determined that a new three-layer surgical mask is 65 percent efficient in filtering particles, but if the mask is worn out, that number drops to 25 percent. In fact, the researchers found that a worn down mask led the wearer to inhale more particles than those wearing no mask at all. Those particles that escape the filtration of your mask can enter through your respiratory tract and instead infect you. As a result, the researchers concluded that wearing a mask with less than 30 percent filtration efficiency can be worse than going out without a face covering.


"It is natural to think that wearing a mask, no matter new or old, should always be better than nothing," study author Jinxiang Xi, PhD, associate professor in the Department of Biomedical Engineering at University of Massachusetts Lowell, said in a statement. "Our results show that this belief is only true for particles larger than 5 micrometers, but not for fine particles smaller than 2.5 micrometers."

https://www.yahoo.com/lifestyle/wearing-mask-could-worse-no-113144318.html




But there's more to choosing the right masks than filtration prowess. Read on to see what to avoid when it comes to PPE, and for more on how to prepare yourself for your inoculation, check out The CDC Is Warning You to Prepare For These COVID Vaccine Side Effects.

AGAIN:

WEARING A MASK PREVENTS THE USER FROM TRANSMITTING, MORESO THAN THE WEARER FROM SOMEONE ELSE NOT WEARING A MASK.

It does NOT appear this "study" is addressing ANY of that.
 
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The point isn't just about protecting the wearer from others. The point is that effectiveness goes down, and that can work both ways.

I support wearing masks, and wearing them effectively will provide better success. It's sad that so many people still want to dismiss everything that doesn't fit their agenda instead of keeping an open mind. People also believe in science until they don't.

Droplets vs particles? Really? Did we know that in the beginning? Does knowledge just stop when we get to a certain point? Distancing was originally 3 feet, then moved to 6 feet for 15 minutes. That's likely not true. Shields were effective, but now there are studies showing they aren't.

Just because we now believe droplets are the major physical method doesn't mean it can't be spread as particles. If wearing a mask is no big deal, wearing a clean mask should be no big deal, right?
Wearing masks helps prevent the spread of virus. Therefore it makes sense for everyone to wear masks.
 
Did any of you morons actually read the article? Or do you just enjoy being purposefully obtuse?

The mask is to protect others from your droplets. Of course a surgical mask is less effective at filtering out inhalants for the wearer after it's been used. It still catches the droplets going out.

Yep

No matter how many times this is repeated, some rando Twitter account pulls up a "new study" that isn't related to that fact, at all, and the MAGAs go berserk pretending it's something earthshattering.

Lather. Rinse. Repeat.
 
Well, according the research in the OP, actually worst case is they are a net negative.
But, if you agree that they do very little, which the case data suggests is true, then stop trying to convince people they make a big difference.
Or, we would see a big difference in areas that have mandated masks. And, we do not.
On the whole, they make a big difference. Thus the message to everyone remains - wear a mask.
 
What's changed in these. Seems they all recommend a mask underneath the shield.
 
AGAIN:

WEARING A MASK PREVENTS THE USER FROM TRANSMITTING, MORESO THAN THE WEARER.

It does NOT appear this "study" is addressing ANY of that.

You're the one that posts the graphic showing the percentages if one or both users wear a mask.

I guess it's too much thinking outside the box for you to consider that droplets and particles can flow through cloth both ways.

Have you given any thought as to why wearing a mask protects others, moreso than the wearer? It's likely because the wearer's eyes are uncovered, and the eyes are also an entry point for the virus, but not much of an exit.

Apparently since you didn't post this, it should be dismissed. Did you ever consider the possibility that cases are still going up despite mask use because a lot of people don't wear them correctly, or launder them? Did you ever consider the possibility of that being the difference between Japan and other places where mask usage is new?
 
You're the one that posts the graphic showing the percentages if one or both users wear a mask.

I guess it's too much thinking outside the box for you to consider that droplets and particles can flow through cloth both ways.
No; that's LITERALLY what you've been told as to WHY they work for limiting transmission.
 
What's changed in these. Seems they all recommend a mask underneath the shield.

He has no idea what he's even posting.
It's just throwing shit around and seeing what sticks.

Pretty much anytime he posts anything scientific, he doesn't understand it, and misrepresents results with some wacky political stance.
 
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On the whole, they make a big difference. Thus the message to everyone remains - wear a mask.

That is an assumption. Which the case counts are showing that masks and additional precautions cannot keep spread under control.
Because if you haven't noticed, despite since knowing and using these precautions for months, nowhere has been safe or been able to keep things consistently under 5%.
 
That is an assumption. Which the case counts are showing that masks and additional precautions cannot keep spread under control.
Because if you haven't noticed, despite since knowing and using these precautions for months, nowhere has been safe or been able to keep things consistently under 5%.
It's not - it's been studied and scientific consensus deems masks help prevent the spread of virus. They've never been touted as 100% foolproof and the allusion to that is intellectually lazy. They help. As does distancing. As does avoiding large gatherings. There are those of you who will pick nits with outliers and such, but the fact remains, masks work. Wear them.
 
Everyone is wearing them. They aren't providing the protection that you and others have insisted they would.
So, you keep dialing back expectations with every new spike.
The question is if all these precautions, including closing and severely restricting businesses and schools are worth it for a reduction of 1%, 5%...10%?
There is a discussion to be had around that, which unfortunately gets drowned out because of people like you.
 
Everyone is wearing them. They aren't providing the protection that you and others have insisted they would.
So, you keep dialing back expectations with every new spike.
The question is if all these precautions, including closing and severely restricting businesses and schools are worth it for a reduction of 1%, 5%...10%?
There is a discussion to be had around that, which unfortunately gets drowned out because of people like you.
More people are now and that is helping. More mandates have pushed that along, it appears. However, it's incorrect to say everyone is wearing them. Too many still aren't.

There are levels of precautions. If everyone was wearing masks, distancing and avoiding gatherings there may be no need for severely restricting businesses or schools. People like you ignore this.
 
How in the hell can this can be argued after nearly a year?

Because the Orange Turd kills everything be touches.
 
I wasn't being serious but to think that masks are silver bullets(as many on here and in the media have insinuated) to stopping a tiny virus from spreading is magic thinking. It may help a tiny bit but there have been studies showing the percentage of stopping transmission is very small. In reality, the mask debate has given people who think highly of themselves another excuse to ridicule their fellow citizens. Its how people who live through a political lense get their oxygen.
Damn. See? I got the joke and was going to defend you and then you had to do something stupid like this.
 
The point isn't just about protecting the wearer from others. The point is that effectiveness goes down, and that can work both ways.

I support wearing masks, and wearing them effectively will provide better success. It's sad that so many people still want to dismiss everything that doesn't fit their agenda instead of keeping an open mind. People also believe in science until they don't.

Droplets vs particles? Really? Did we know that in the beginning? Does knowledge just stop when we get to a certain point? Distancing was originally 3 feet, then moved to 6 feet for 15 minutes. That's likely not true. Shields were effective, but now there are studies showing they aren't.

Just because we now believe droplets are the major physical method doesn't mean it can't be spread as particles. If wearing a mask is no big deal, wearing a clean mask should be no big deal, right?
Hasn't the messaging from the beginning been to wash your mask frequently? What am I missing here?

It would appear that under a very specific set of circumstances that are highly unlikely to be found in public a very dirty mask might be less protective to the wearer (which was never the main point) than no mask at all.

And?
 
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Well, according the research in the OP, actually worst case is they are a net negative.
That's not what that research states.
Everyone is wearing them.
And that is complete bullshit. That you even post something so f'n stupid and that can be disproven in under 30 seconds demonstrates that you're full of shit.

Gessen-MaskProtests.jpg


Actually, that took less than 30 seconds.
 
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That's not what that research states.

And that is complete bullshit. That you even post something so f'n stupid and that can be disproven in under 30 seconds demonstrates that you're full of shit.

Gessen-MaskProtests.jpg


Actually, that took less than 30 seconds.
What took so long?
_114003813_blmleadpic796.jpg
 
wearing a mask with less than 30 percent filtration efficiency can be worse than going out without a face covering
LOL... I'm not buying the 'worse' part. Also, "used or worn out"... Is "used" once? It does make sense that a mask that loses its density or filtration ability would be less effective than a new one.
 
LOL... I'm not buying the 'worse' part. Also, "used or worn out"... Is "used" once? It does make sense that a mask that loses its density or filtration ability would be less effective than a new one.
Here's what the research says:

"Our results show that this belief is only true for particles larger than 5 micrometers, but not for fine particles smaller than 2.5 micrometers."

Soooo...if you are in an environment where the only vector for spreading Covid would be particles smaller than 2.5 micrometers (meaning no droplets at all and no larger airborne particles), and you're using a very old mask whose filtration capability has been degraded by more than 60%....the mask might be worse than no mask at all for the wearer only.

I'm...shocked?
 
Wearing masks helps prevent the spread of virus. Therefore it makes sense for everyone to wear masks.
If you read any of the "expert" guidance, it always says "may" help prevent the spread. NOBODY has ever said it prevents the spread. Studies done in 2020 do not disprove studies over the past 100 years that basic masks do not prevent the spread. When contract tracing is done, if you were exposed to an infected person, you must quarantine unless you were wearing an N-95 mask. Therefore regular masks are not considered. Mask have wrongly become the "first defense" when clearly staying away from people is the priority. The masks most of us wear are worn by medical professionals first and foremost, to protect them from liquids, not particles, else they wear something different.
 
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If you read any of the "expert" guidance, it always says "may" help prevent the spread. NOBODY has ever said it prevents the spread.

Kansas has.

Your Fox & Friends buddy literally pointed that out, and corrected his MAGA pals on camera citing their study.
 
If you read any of the "expert" guidance, it always says "may" help prevent the spread. NOBODY has ever said it prevents the spread. Studies done in 2020 do not disprove studies over the past 100 years that basic masks do not prevent the spread. When contract tracing is done, if you were exposed to an infected person, you must quarantine unless you were wearing an N-95 mask. Therefore regular masks are not considered. Mask have wrongly become the "first defense" when clearly staying away from people is the priority. The masks most of us wear are worn by medical professionals first and foremost, to protect them from liquids, not particles, else they wear something different.
You're wrong again. Masks make it harder for the virus to spread. That is the wide consensus of science. No one is suggesting they 100% stop the spread or are infallible. They do help and should be worn by everyone. Similar to seatbelts and airbags - they are effective in protecting people despite not doing so 100% of the time.

Get your head out of your ass and wear your mask and promote it to others.
 
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Surgeons wear masks. Nurses in operating rooms wear masks. Are they hiding behind them, or is there a purpose? That purpose is why masks should be worn to prevent airborne contaminates. It ain't rocket science.
 
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Surgeons wear masks. Nurses in operating rooms wear masks. Are they hiding behind them, or is there a purpose? That purpose is why masks should be worn to prevent airborne contaminates. It ain't rocket science.

It is, however, beyond the cognitive grasp of your typical MAGA, like @coloradonoles
 
Surgeons wear masks. Nurses in operating rooms wear masks. Are they hiding behind them, or is there a purpose? That purpose is why masks should be worn to prevent airborne contaminates. It ain't rocket science.

You do realize the masks healthcare employees wear are different than the cloth masks 99% of the general public is wearing? Right?
 
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