This was reported in the UN Office for the Coordination of Humanitarian Affairs’ Humanitarian Bulletin for March 9 -15. It also reports that there are 3.1 million displaced people in the country (2.5 million of these are in the western part of Sudan, aka Darfur). It also gives you an idea of what the UN and partner organizations have to do for large numbers of displaced people. Check it out, it’s only four pages long:
http://reliefweb.int/report/sudan/sudan-humanitarian-bulletin-issue-11-9-15-march-2015