Positive stress, on the other hand, is known as eustress, and is generally regarded as beneficial. I am not aware of a term for expected stress. Distress isn't a disease either, it can be a symptom for a disease, but it is not actually a disease itself.
Bubonic plague is a deadly infectious disease commonly spread by rats. (<span>It follows infection by the bite of the chip of a rat or <span>rodent)</span></span>
