The universal superstition about all maladies is that they are caused by the "evil eye," directed against the sufferer by some enemy.

Should one member of a tribe be stricken down with a disease, his friends at once come to the conclusion that he has been "pointed at" by a member of another tribe who owed him a grudge; he has, in short, been bewitched, and an expedition is promptly organised to seek out and punish the individual in question and all his tribe.

From this it is obvious that war is of pretty frequent occurrence.

And not only so, but every death is likewise the signal for a tribal war.

There is no verdict of "Death from natural causes." Punitive expeditions are not organised in the event of slight fevers or even serious illness--only when the patient dies.