I think that aligns with what I said. It's a path that can be traced. Not a fun exercise by any means but I think it's doable by the CDC. They and the WHO train for this all the time.

It can be traced as well as airborne? Not easily, not perfectly. One attendant (so far) - they didn't even know she was sick at the time (long gestation). Not whomever cleaned the plane later, took the seat beside hers, checked her boarding pass, checked/retrieved her luggage, used the pass-printing machine right after her, got in the same cab she took to the airport as she got out, held the same escalator railing, held the same transit bar, pressed the same open door buttons, used the same cubicle in the washroom.