South Sudan is one of the poorest countries in the world with about half of its population (51%) living on less than 1 US$ per day. The economy of South Sudan is one of the world´s weakest and most underdeveloped; having little existing infrastructure and the highest maternal mortality and female illiteracy rates in the world. The vast majority of the population is engaged in rural subsistence farming and cattle herding. Living conditions are deprived; with poor access to potable drinking water (less than 50%), poor access to proper sanitation (less than 7%) and high illiteracy rates among adult population (88% among women and 63% men).