There's two sides to an infectious situation: the risk of getting it, and the risk of passing it to others.
I live in a very rural and remote area. Now, certainly, people in my community travel, including by air and overseas. But it seems (unscientific supposition) that we ruralites have fewer routes to have a transmissible disease enter the community than does a community of more densely packed people, with more high tech type jobs that involve even more travel.
So as I try to decide whether I should go on a planned visit to my mom who lives in dementia care in one of the areas currently having community-spread cases, I have to consider both my feelings about my own risk of catching it as well as my potentially being the one to bring it back to my community.
I'm not elderly and am in the middle zone in terms of pre-existing health conditions (I'm generally healthy but had bronchitis a year ago and still feel like I have a susceptibility in my lungs) so my personal risk is pretty low -- meaning if I got it, it might kick my behind but good, not a fun experience, but chances are I would recover.
But there is NO WAY I want to be the one to bring it into my area. Even if it couldn't be tracked back to me, if others started getting cv shortly after I returned (I have public contact via my job at the local library, plus in a small town we all shop at the same store, eat at the same cafe, etc) I wouldn't be able to stand that.