Canada/US Border still shut...

BCSnob wrote:

spoon059 wrote:

Just curious... you know that wearing non surgical masks to prevent the spread of a virus is about as effective as chain link fence prevent the spread of mosquitos, right? In fact, studies have shown that masks that are saturated from breathing are actually MORE likely to harbor the virus because of the humid warm environment on the mask?

What studies?

This is the only one on non-surgical masks I can find.
Invitro filtration efficiency for selected face masks to bacteria with a size smaller than SARS-CoV-2 respiratory droplet
This study suggests double cloth masks are effective at filtering exhaled virus containing droplets.