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Problems with masks.
They generally filter to 2 microns, the virus in aerosol form is about 0.12 microns.
Germs and viruses will gather on the outside surface of the mask so if not removed properly, these will transmit to the hands.
The nose piece causes people to repeatedly touch the bridge of the nose, close to the tear ducts, an entry point into the body. I the hands are contaminated then this poses a risk.
They make you feel protected so could cause you to be less vigilant in other preventative measures such as hand washing.Benefits
They will stop the virus in droplet (cough/sneeze/spittle) form from reaching the face, see above about then touching the mask.
They stop droplets from infected persons.
They will reduce the area over which an infected persons breath will cover.
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Ramsaye
ric_a5
Second general question re masks and the example of Extra’s family’s overwhelming determination to provide themselves with protection... if masks genuinely provide no real protection from transmission, why do medical staff always wear them in high risk situations?