Dr Margaret Chan
Media playback is unsupported on your device

WHO: Ebola countries cannot manage outbreak on own

8 August 2014 Last updated at 09:57 BST

The World Health Organization (WHO) has declared the spread of Ebola in West Africa an international health emergency.

At a news conference in Geneva, the WHO's Director General, Margaret Chan, said a coordinated international effort was needed to avoid a global crisis.