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pandemic • mask information and resources thread 

I've found a lot of information about masks, why you should wear one, and how to make them.

It's all worth sharing, so I'm making a thread of it here to keep track of things.

pandemic • mask information and resources thread • #Masks4All 

is a social movement advocating mask wearing as essential protection during the pandemic. Protecting each other like this slows the spread of the virus, and works best if we all do it together.

This movement began in Czechia, spurred by anger at their government for not doing enough to protect people.

masks4all.org/

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pandemic • mask information and resources thread 

The most important use of masks is not to protect yourself but to protect others.

“Models show that if 80 percent wear masks that are 60 percent effective, easily achievable with cloth, we can get to an effective R0 of less than one....Mask use in combination with physical distancing is even more powerful.”

theatlantic.com/health/archive

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pandemic • mask information and resources thread 

In epidemiology, a critical consideration of infectious diseases is the transmission rate, R. Studies have shown that if most people in public wear a mask, the transmission rate can go below 1.0, effectively stopping the spread of the virus. “The mask doesn’t have to block every single viral particle, but the more particles it blocks, the lower the effective R.”

In simpler terms, wearing masks to stop the pandemic from continuing is supported by scientific studies.

fast.ai/2020/04/13/masks-summa

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pandemic • mask information and resources thread • Improvised masks 

A video from the US Surgeon General, showing how to make a quick, improvised cloth mask from a t-shirt, which will work if nothing else is available.

youtube.com/watch?v=PI1GxNjAjl

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pandemic • mask information and resources thread • Improvised masks 

A video showing how to make a quick, disposable mask from a paper towel. Paper towels are surprisingly effective at filtering air. This kind of thing will work if nothing else is available.

youtube.com/watch?v=u9MnDsUyYA

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pandemic • mask information and resources thread • some miscellaneous links 

Homemade cloth masks are encouraged in Thailand
straitstimes.com/asia/se-asia/

Czechia flattened their curve through compulsory mask wearing
business-standard.com/article/

Doctors advise widespread mask usage to prevent “stealth transmission” (i.e. transmission of the virus by people who don’t appear to be ill)
medscape.com/viewarticle/92772

A medical preprint article: “widespread use of masks by the general population could be an effective strategy for slowing down the spread of COVID-19”
medium.com/@matthiassamwald/pr

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pandemic • mask information and resources thread • medical journal papers 

"Any type of general mask use is likely to decrease viral exposure and infection risk on a population level, in spite of imperfect fit and imperfect adherence, personal respirators providing most protection."
ncbi.nlm.nih.gov/pmc/articles/

"We recommend the immediate universal adoption of cloth facemasks, including homemade, and accompanying policies to increase the supply of medical masks for health workers. Universal adoption will likely slow the spread of the COVID-19 virus by reducing transmission from asymptomatic individuals."
papers.ssrn.com/sol3/papers.cf

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pandemic • mask information and resources thread • mask making 

HKMask Manual – Unofficial instructions from Hong Kong on how to make a cloth N70 mask with a disposable inner filter. The filter is a paper towel.
diymask.site/

Magazine article about how to sew face masks
goodhousekeeping.com/health/a3

Instructables article about mask making
instructables.com/id/DIY-Cloth

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pandemic • mask information and resources thread • mask making 

On which fabrics you should use when making a mask...

Cotton blend fabrics offer a good combination of filtering ability and breathability (it's important to make your mask comfortable enough to wear)
smartairfilters.com/en/blog/be

A small clothing manufacturer found that "hydro knit" shop towels are effective at filtering air. Hydro knit is actually a brand name for a kind of non-woven fabric. I'll explain what that means in the next toot in this thread.
businessinsider.fr/us/homemade

A researcher found that making masks impregnated with salt helps kill off viruses, but I'm not sure how you could use this in a homemade mask.
businessinsider.fr/us/mask-coa

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pandemic • mask information and resources thread • non-woven fabric 

A non-woven fabric is any kind of cloth made from long fibres which are held together without any kind of weaving or knitting. Instead they've bonded by chemical treatments, heat treatments, or just compression. Felt is a type of non-woven fabric most people know.

Because of the way they're made, they're very absorbent and are often used to make cleaning cloths and disposable towels. Your kitchen cleaning clothes are probably made from this kind of thing. As are disposable cloths used by mechanics.

Nonwoven fabrics are also better at filtration than other fabrics. Professional surgical masks and vacuum cleaner bags use them. While you may not find anything as effective as an actual surgical mask, this kind of fabric might work well in a homemade mask.

But be careful about using any made purely from synthetic fibres like polyester. They're not very breathable!

en.wikipedia.org/wiki/Nonwoven

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pandemic • mask information and resources thread 

It's also important to use a mask properly to make sure it's effective, and to properly dispose of used disposable masks. And also to make sure healthcare workers have priority access to professional quality masks.

Here are some WHO guidelines about that:
who.int/publications-detail/ad

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pandemic • mask information and resources thread • mask making 

@InvaderXan I've made 8 of these and I find the pattern easy and comfortable

craftpassion.com/face-mask-sew

pandemic • mask information and resources thread • mask making 

@InvaderXan oh, a note: I make the "man" pattern for just about everyone and add an inch on each side for my larger friends.

also, scaled down, it fits a cat. Getting the cat to wear it... can't help with that.

pandemic • mask information and resources thread • mask making 

@InvaderXan Hrrm, I see this one is pretty much the instructables one, sorry!

pandemic • mask information and resources thread • mask making 

@aldersprig Oh, no no, don't apologise, I welcome the addition!

I'm not sure my cat would feel the same way, however.

pandemic • mask information and resources thread • mask making 

@InvaderXan Yeah, Merit was Unpleased. :-D

pandemic • mask information and resources thread • some miscellaneous links 

@InvaderXan
Thanks for the thread! :ancomheart:

These are the two (recent) articles that I liked best about the topic:
sciencemag.org/content/early/2
onlinelibrary.wiley.com/doi/10

edit: delete&re-draft, the first link was not recognized as a link

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