Homemade mask study at Cambridge University

A study conducted at Cambridge University during the 2009 swine flu outbreak also provides ideas on the masks to be used in the current COVID-19 outbreak.
According to a study conducted at the University of Cambridge during the 2009 swine flu outbreak; surgical masks were the most effective material in the test group for filtering bacterius atrophaeus bacteria of 0.93-1.25 micron size and bacteriophage ms2 virus of 0.023 micron size. materials such as vacuum cleaner bags, hand towels or cotton t-shirts, tissue paper have also been found to be protective in the following percentages.

vacuum cleaner bag (dust bag): 95%
dish drying towel: 83%
cotton blended fabric: 74%
100% cotton fabric: 69%
antimicrobial pillowcase: 65%
scarf and pillow covers: 62%
flax: 60%
silk: 58%

The sars-cov-2 virus has a size in the range of 0.08-0.09 microns and is widely spread by droplets around 5 microns. therefore, the data in the study are valid for this virus. we look at the second part of table 1 for contact contamination and protections are falling.
The easiest to find vacuum cleaner bag (dust bag) and the price is also affordable. no shaped etc. If you want, you can do it yourself at home with the drying cloth. 83-95% protection is not a bad rate, moreover, if you make these pieces in pieces, you can wash and reuse them when you are done.

You can also find the practical mask making video here:

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