African countries tightened travel curbs on Thursday in an effort to contain the Ebola outbreak, ignoring World Health Organization warnings that such measures could heighten shortages of food and basic supplies in affected areas.

In the West Point slum in Liberia's capital Monrovia, the scene of violent clashes with the army on Wednesday after the area was quarantined to curb the spread of Ebola, hundreds of people jostled their way toward trucks loaded with water and rice.

Police used canes to beat back some locals while aid workers helped others dip their fingers in ink to record their ration.