WHO's Director General, Margaret Chan
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Ebola an 'international emergency' - in 15 seconds

8 August 2014 Last updated at 18:55 BST

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

WHO officials said a co-ordinated international response was essential to stop and reverse the spread of the virus.

Here is the story in 15 seconds.