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.
The land rises into the Ennedi and Wadai plateaus along the eastern border with Sudan, where elevations reach near 2000 ft (609 m). In the south, the forested land is nourished by the Chari and Logone Rivers. During the monsoon rains, Lake Chad often overflows, causing floods in the lowland depression of the south. The highest point of Chad is Emi Koussi, which rises 11,204 ft (3,415 m); the lowest point of the country is the Djourab Depression at 524 ft (160 m). 1  Landforms of Africa.