Re: Track the carriers, and you track the epidemic.
Yes, that's the point. You do the basic now, so that in 11 days when someone you came into contact with is diagnosed C+ and you get notified, you haven't spread it in the last 11 days.
Yeh indeed Doh!
A basic mask has two layers, the outer blue layer repels water, it is to repel the droplets from other people. The inner white layer is to absorb your droplets. It is to stop you spreading the virus to other people.
You would have to be an utter moron to not wear one during an epidemic.