UN warns of humanitarian disaster in Central Africa

 The UN has warned that the Central African Republic is heading toward a humanitarian disaster, as people fleeing conflict pack into overcrowded camps with poor sanitation.It said measles has broken out at the airport in the capital, Bangui, where about 100,000 people are seeking refuge from clashes between rival militias.Separately, reports that the president is to step down have been denied.Officials say that Michel Djotodia’s resignation is not on the agenda.President Djotodia’s spokesman told the (BBC) that the president was on his way to neighbouring Chad to “attend a regional summit, but not to resign”.But the president’s failure to quell violence between Christian and Muslim militias has prompted speculation that he may indeed step down at the summit.A senior diplomatic source in Paris and political sources in Bangui said that regional leaders led by Chad had run out of patience with President Djotodia, who seized power in March as the head of Muslim Seleka rebels.