Not just North Americans

Get a few kilometers away from El Centro and in the Colonias, you will see infrequent regular mask wearing but everyone carries them so that they can ride the combis. I frequent fereterias and building supply tiendas and many of them require customers to wear masks but not all require employees to.

I am pretty sure there is a general sense of virus fatigue couple with no one sees first hand what happens to the vulnerable when they get the virus.