Rabies

Rabies is a disease, causing you to become mad, have frothy saliva and a desire to pass it on to others, it is normally found in canines, but can be passed to any creatures. The Ood disease, Red-eye, had symtoms very like that of rabies, the only differences being that Red-eye also gives you red eyes and no frothy breath. Oods were considered rabid by Klineman Halpen (DW: Planet of the Ood).