Restrictions have been lifted in most public places here in my part of Maryland. But I live in an area with a large immigrant population. When I go to the grocery, the people I see still wearing masks are generally Hispanic or Asian.
I haven’t figured that out, unless it’s cultural in some cases, and a matter of education in others. We also have a large Black population, but they don’t seem to still wear the masks as much as others.
In many Asian countries, people will wear masks when they don’t feel well to avoid spreading whatever they have; they will also wear masks when air pollution is particularly bad.