After a slew of likely contenders such as heart disease, anemia, thyroid disease, depression or a sleep disorder are ruled out, getting to the source of fatigue gets murky. Among the many next-tier suspects is the Epstein-Barr virus (EBV).
Indeed, 2.4 million of those at risk of famine were in southern Sudan, the main arena of the war. Southern Sudan occupies almost one third of the territory of Sudan, which at 2.5 million square kilometers is the largest country in Africa.
But the most remarkable of all was that which arose in Egypt in the days of Joseph, which lasted for seven years (Gen. 41-45). Famines were sent as an effect of God's anger against a guilty people (2 Kings 8:1, 2; Amos 8:11; Deut. 28:22-42; 2 Sam. 21:1; 2 Kings 6:25-28; 25:3; Jer. 14:15; 19:9; 42:17, etc.).