This massive and sudden arrival had a major impact on household economies as food reserves which were supposed to last several months were used up in a few weeks. Furthermore, the lack of humanitarian response in these areas pushed certain people to go down into the plains to set up “ghost” camps in order to obtain aid. ###>Cette arrivée massive et soudaine a eu un fort impact sur l’économie des ménages puisque les réserves alimentaires prévues pour plusieurs mois ont été consommées en quelques semaines.