[mewzilla]

They know, though, how big corona viruses are. If this mask won't filter out something that size, why were they using it?

[aristeides]

If this mask won't filter out something that size, why were they using it?

It will still filter out things like sputum and droplets of saliva. It's not established yet that SARS has airborne transmission, in the strict sense.

[Axenolith]

Masks and shields prevent "force of habit" hand to mouth and eye contact.

[DB]

I would assume larger particulate matter from coughs and sneezes or just general splatter that go air born. That's the same reason for covering the eyes.

An effective mask against an error born virus is probably much more like a gas mask.

[DB]

Hey... I like "error born"... Describes my writing to a tee...

Make that "air borne"...