Ebola: nine charts show why it matters

By Conrad Walters and Inga Ting
Updated December 15 2014 - 10:14am, first published November 21 2014 - 5:15pm
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.
A health official wearing a protective suit waits to screen passengers in Lagos, Nigeria.

West Africa's Ebola outbreak remains "intense and widespread" in Sierra Leone, the World Health Organisation says, and officials in Mali are searching for hundreds of people who may have touched the body of an infected imam.