CT for a virus? You can only see that something is inflamed. I mean you can guess the diagnosis, but that doesn't really increases my confidence in testing. If inflammation can be detected, you probably also have symptoms already. That aside, you should limit CTs if possible. And you won't be able to do mass scans anyway. So it is just for specific cases. MRTs could also help and are not as invasive, but maybe they don't show enough.