Masks/respirators for respiratory infections prevention:state of the science review

[J.L.C.]

Falling somewhere in between the effectiveness of the Darth Vader masks and near useless surgical masks, and assuming a person is wearing said n95 to where it is uncomfortable.
To lessen transmission of a common cold or seasonal flu.

I'd rather old people getting an injection of peptides like TA-1 or TB-500. Not only would they shake off respiratory viruses with ease they'd develop less cancer and atherosclerosis. But I won't hold my breath, that would crumble sick care and a lot of hospitals would go bankrupt.

Okay.

But still, masks and respirators clearly prevent respiratory viral infections.

[Paul Kreul]

All 413 references are corrupt?

Is Big Respirator pulling out all the stops to sell more product?

The few I looked at were..but you avoided the content of the actual post..respiratory droplet size, viral load has not changed..only the corrupt science has

[J.L.C.]

The few I looked at were..but you avoided the content of the actual post..respiratory droplet size, viral load has not changed..only the corrupt science has

How do you determine a paper is corrupt?

You refuse to acknowledge that individual virions don't float around naked, so there isn't much discussion to be had

[frankdtank20]

Okay.

But still, masks and respirators clearly prevent respiratory viral infections.

There is no reason to conflate the two as though they are the same. They are not.

[J.L.C.]

There is reason to conflate the two as though they are the same. They are not.

Agreed.

The paper addresses both

[Paul Kreul]

How do you determine a paper is corrupt?

You refuse to acknowledge that individual virions don't float around naked, so there isn't much discussion to be had

I see you aren’t actually reading my posts..I stated respiratory droplet size has not changed…did you miss that.

Let’s try this one more time..the Covid virus is .125 microns and N95 masks have pore holes of .3 microns and surgical masks have pore holes ranging from 16 to 140 microns and DROPLETS around .2 microns can be atomized and have a hang time in cloud form for 6-40 hours and almost no one having sealed eye protection and ya do the math and really think about it then ask what viral load do you need to catch covid ?

[Anachron]

Strange that so many refuse to accept masks and respirators reduce transmission of respiratory viruses, eh?

Strange that you can't provide proof that you had, as you claimed, multiple doses of Comirnaty, eh?

[J.L.C.]

I see you aren’t actually reading my posts..I stated respiratory droplet size has not changed…did you miss that.

Let’s try this one more time..the Covid virus is .125 microns and N95 masks have pore holes of .3 microns and surgical masks have pore holes ranging from 16 to 140 microns and DROPLETS around .2 microns can be atomized and have a hang time in cloud form for 6-40 hours and almost no one having sealed eye protection and ya do the math and really think about it then ask what viral load do you need to catch covid ?

You post the same silliness every time this comes up. I dunno where you got it, but it's clear you're committed and refuse to update.

[Anachron]

You post the same silliness every time this comes up. I dunno where you got it, but it's clear you're committed and refuse to update.

You post the same silliness every time this comes up. I dunno where you got your shots of Comirnaty, but it's clear you're committed to the lie and refuse to admit it.

[frankdtank20]

Agreed.

The paper addresses both

Fixed my typo above. No reason to conflate. Why are you still clinging to Covid so hard? Even my youngest had zero symptoms when she had it as a newborn. Innate immunity FTW.

[J.L.C.]

Fixed my typo above. No reason to conflate. Why are you still clinging to Covid so hard? Even my youngest had zero symptoms when she had it as a newborn. Innate immunity FTW.

What makes you think this paper only relates to covid?

Newborn immunity = maternal immunity

[Paul Kreul]

You post the same silliness every time this comes up. I dunno where you got it, but it's clear you're committed and refuse to update.

I posted the study where I got that..you have never disproved it..

Again..a virus spreads through aerosol transmission & only low infectious dose is needed.

-Aerosol transmission of influenza A virus: a review of new studies
Raymond Tellier. J R Soc Interface. 2009.

[J.L.C.]

I posted the study where I got that..you have never disproved it..

Again..a virus spreads through aerosol transmission & only low infectious dose is needed.

-Aerosol transmission of influenza A virus: a review of new studies
Raymond Tellier. J R Soc Interface. 2009.

I countered repeatedly. You did your usual mix and match of misunderstood studies and claims.

Regardless, the study presented here presents a logical conclusion supported by synthesis of numerous references.

[Paul Kreul]

I countered repeatedly. You did your usual mix and match of studies and claims.

Regardless, the study presented here presents a logical conclusion supported by synthesis of numerous references.

What do you think I’m mixing and matching..I presented the facts..the main transmission path is long-residence-time aerosol particles (< 2.5 μm), which are too fine to be blocked, and the minimum-infective dose is smaller than one aerosol particle.
The reason workers in a virus lab wear moon suits, go through multiple sets of sealed doors with decontamination procedures before that suit is removed and breathe pressurized outside air while inside the lab is that these are facts and said virus -- any virus -- will go right through any "mask."

[J.L.C.]

What do you think I’m mixing and matching..I presented the facts..the main transmission path is long-residence-time aerosol particles (< 2.5 μm), which are too fine to be blocked, and the minimum-infective dose is smaller than one aerosol particle.
The reason workers in a virus lab wear moon suits, go through multiple sets of sealed doors with decontamination procedures before that suit is removed and breathe pressurized outside air while inside the lab is that these are facts and said virus -- any virus -- will go right through any "mask."

N95 masks have a filtration efficiency of at least 95% for NaCl particles 100–300 nm in size.

[davik]

they work. but in real life, the compliance and wearing them properly doesnt happen.

[Paul Kreul]

N95 masks have a filtration efficiency of at least 95% for NaCl particles 100–300 nm in size.

..and droplets around .2 microns can be atomized..a mask does not stop viral transmission.

[J.L.C.]

..and droplets around .2 microns can be atomized..a mask does not stop viral transmission.

Clearly masks and respirators prevent/reduce infection and transmission

Also, nanometers <<< micrometers/microns

[Paul Kreul]

Clearly they do

Also, nanometers <<< micrometers/microns

Clearly they don’t..which is why the studies show they don’t besides the fact the states & countries with the most strict mask mandates faired no better than those without…we can go state by state or by country if you like.

If you were actually scientifically-minded you’d show a real interest in how California continued to spike despite having very drastic measures, or how all these Midwest states follow the exact same trajectory. That can’t be explained by 40 million people all complying at once.

You can claim COVID spread is entirely because of noncompliance with COVID measures, but please nexplain how 9 Midwest states peaked within one week of each other despite having completely different COVID policies, or how South Dakota managed to be the first to peak among them

[J.L.C.]

Clearly they don’t..which is why the studies show they don’t besides the fact the states & countries with the most strict mask mandates faired no better than those without…we can go state by state or by country if you like.

If you were actually scientifically-minded you’d show a real interest in how California continued to spike despite having very drastic measures, or how all these Midwest states follow the exact same trajectory. That can’t be explained by 40 million people all complying at once.

You can claim COVID spread is entirely because of noncompliance with COVID measures, but please nexplain how 9 Midwest states peaked within one week of each other despite having completely different COVID policies, or how South Dakota managed to be the first to peak among them

Read the study yet?

Also, .2 micron is 200 nm

[Paul Kreul]

Read the study yet?

Also, .2 micron is 200 nm

I did..it did not show masks stopping viral transmission.. as far as your N95 information..where are you getting this from?

N: This is a Respirator Rating Letter Class. It stands for “Non-Oil” meaning that if no oil-based particulates are present, then you can use the mask in the work environment. Other masks ratings are R (resistant to oil for 8 hours) and P (oil proof).

95: Masks ending in a 95, have a 95 percent efficiency. Masks ending in a 99 have a 99 percent efficiency. Masks ending in 100 are 99.97 percent efficient and that is the same as a HEPA quality filter.

.3 microns: The masks filter out contaminants like dusts, mists and fumes. The minimum size of .3 microns of particulates and large droplets won’t pass through the barrier, according to the Centers for Disease Control and Prevention (CDC.)

Material: The filtration material on the mask is an electrostatic non-woven polypropylene fiber.

Valve: Some disposable N95 masks come with an optional exhalation valve. “The presence of an exhalation valve reduces exhalation resistance, which makes it easier to breathe (exhale,)” according to the CDC.



.3 microns

THE COVID VIRON IS 1/10 of ONE MICRON

.2 microns are transmitted of viral load

[JUSA]

they work. but in real life, the compliance and wearing them properly doesnt happen.

I said the same thing, JLC would not make a serious response, though.

[J.L.C.]

I did..it did not show masks stopping viral transmission.. as far as your N95 information..where are you getting this from?

N: This is a Respirator Rating Letter Class. It stands for “Non-Oil” meaning that if no oil-based particulates are present, then you can use the mask in the work environment. Other masks ratings are R (resistant to oil for 8 hours) and P (oil proof).

95: Masks ending in a 95, have a 95 percent efficiency. Masks ending in a 99 have a 99 percent efficiency. Masks ending in 100 are 99.97 percent efficient and that is the same as a HEPA quality filter.

.3 microns: The masks filter out contaminants like dusts, mists and fumes. The minimum size of .3 microns of particulates and large droplets won’t pass through the barrier, according to the Centers for Disease Control and Prevention (CDC.)

Material: The filtration material on the mask is an electrostatic non-woven polypropylene fiber.

Valve: Some disposable N95 masks come with an optional exhalation valve. “The presence of an exhalation valve reduces exhalation resistance, which makes it easier to breathe (exhale,)” according to the CDC.



.3 microns

THE COVID VIRON IS 1/10 of ONE MICRON

.2 microns are transmitted of viral load

"N95 masks have a filtration efficiency of at least 95% for NaCl particles 100–300 nm in size."


https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9915213/

[frankdtank20]

What makes you think this paper only relates to covid?

Newborn immunity = maternal immunity

Covid is the only health topic you have any knowledge about. The only reason you started this thread.

[J.L.C.]

Covid is the only health topic you have any knowledge about. The only reason you started this thread.

You certainly have a right to your own opinion

But, that doesn't explain why you think this paper is restricted to covid.

[Paul Kreul]

"N95 masks have a filtration efficiency of at least 95% for NaCl particles 100–300 nm in size."


https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9915213/

that’s NaCl..not human respiratory droplet size that a Covid viron is attached to

[J.L.C.]

that’s NaCl..not human respiratory droplet size that a Covid viron is attached to

Particle size.

"Beyond that, the NaCl aerosol is the best alternative for distinct experimental operations whether the mask type is N95, a surgical mask, or another personal protective device."

[Paul Kreul]

Particle size.

Again..show me an N95 stopping aerosol transmission with covid..what you posted does not show this

Respiratory droplets are smaller than 100nm

[J.L.C.]

Again..show me an N95 stopping aerosol transmission with covid..what you posted does not show this

Respiratory droplets are smaller than 100nm

Here you go again.

You attempted to argue based on physical size.

Now that the claim was refuted, you pivot to covid particles being different?

Regardless, the paper in OP isn't specific to covid

[Paul Kreul]

Here you go again.

You attempted to argue based on physical size.

Now that the claim was refuted, you pivot to covid particles being different?

Regardless, the paper in OP isn't specific to covid

You did not refute anything..

Again..Respiratory droplets are smaller than 100nm

What don’t you understand?