Sunday, 22 March 2020

Does Wearing a Face Mask Protect You?

I was in two minds whether to make masks or not. I didn’t want to waste my time … and fabric … if they were not going to serve a purpose. One can’t find any masks to buy anyway. So I did a little research……
The best way to avoid getting any virus is self isolation, washing your hands and avoiding people who are already sick. Masks will offer some protection – some, if worn properly. I suspect the hype about not wearing them is more about the lack of supply rather than the usefulness. Masks can help in a limited way – they provide ‘a limited physical barrier’.
According to ‘experts’ vaccine is best, but with this new COVID-19 virus and no vaccine yet, will home made masks be enough? The American CDC does not recommend the wearing of masks unless one is showing symptoms of a virus, or are treating someone with the virus. Wearing the masks protect those around you.
With that said, many people – mostly Americans - have been asking for donations of masks as supplies have run out in hospitals, dental surgeries, and even nail salons. As a result, many people are making their own masks.
Recent studies ( https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3591312/ ) have shown that the wearing of masks can help, especially in the flu season, which Australia is heading into now. Researchers have shown that masks help in the reduction of contracting a virus by reducing the droplets in the air. Research has also shown that wearing a face mask and proper hand hygiene will lower the spread of the virus.
So vaccination and wearing a mask. What type of mask?
Masks help keep tiny droplets out of ones nose and mouth, but eyes are also a way virus get into our body. Respirators are designed to keep small airbourne particles out, and are more effective, but who can afford disposable respirators - $50 upwards for 10. Masks will help in the absence of respirators and must be worn in a way that it covers the nose, mouth, and chin.
One only needs to wear the mask if: one is showing any symptoms of a cold or flu; if one is likely to be going near someone else showing symptoms of a cold or flu; perhaps think about wearing a face mask if going into crowded areas.
One use disposable masks are hard to get, and if using re-usable masks they need to be washed at least daily but after each use if able. Fabric masks will retain moisture and therefore may become contaminated if not washed and dried regularly. This will mean people will need at least two or three or more masks. Cloth masks are better than no masks. The type of fabric used is important if mask is to be at least limited protection. I Googled best fabric to make face masks and came up with this great website: Smart Air -it has great graphs and information based on research that shows the effectiveness of different fabrics, and many other websites referenced this site. With that in mind I thought tea towels (filters out approx. 83% of 1-micron bacteria, and 73% of 0.02-micron bacteria) or cotton blend t-shirt fabric (74% and 70%) would be good. Coronaviruses are 0.01 microns. The weave needs to be tight to keep tiny droplets out. The mask also needs to be comfortable. Tea towels may not be as comfortable as more difficult to breathe through, as compared to a surgical mark.
There are many patterns available on line and on YouTube - here are just a few:
Craftpassion           Hackaday        SewGuide          ButtonCounter
I decided to make a reversible mask and cut two pieces 7" x 8", with two end bindings of 2" x 3". This was pretty, but a little too small and very warm to wear. So I ended up making them 7"x7" for kids and 8"x8" for adults.
I also made an opening to insert some non woven fabric or paper towel.
The next morning I decided to make another mask, with a single layer of fabric to make it cooler to wear. I adjusted my measurements to 8" x 9" with 4"x4" for the end tabs to hold the non woven, at Jonnie's request added a stiff nose piece. This one was too big! I'll try MK III next time.
When putting on the mask try not to touch the outside of the mask, but use the elastic ties. Same applies for removing the mask, try to touch only the elastic parts of the mask.As the virus is still at a low threat level in Australia, wearing the masks would not be necessary as yet, unless in a situation as above – having symptoms, near someone with symptoms, and crowds – well no crowds allowed in Australia at present. 
It won't stop you from getting a virus but if nothing else, a fabric face mask will keep your face warm in winter.
Self isolation is the best preventative!! Washy washy washy, and stop panic buying.
Stay safe everyone.

2 comments:

  1. In Belgium is lock down ;school closed only foodstores are open end Farmacie.

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    1. I think that is a good thing that countries are in lock down. Schools here are open, but many parents are keeping their children home from school. Very strange times the world is experiencing. Keep safe.

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