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.
Drought, poor weather, and the policies of the Communist Party of China contributed to the famine, although the relative weights of the contributions are disputed due to the Great Leap Forward. According to government statistics, there were 15 million excess deaths in this period.