Ebola crisis: Tony Blair says world 'too slow to respond'

The world has been "too slow" in responding to the Ebola crisis in west Africa, Tony Blair has said.

The former UK prime minister, who is in Sierra Leone visiting some of the worst-hit areas, said affected countries were still facing "major challenges" but that there were some signs of optimism.

Mr Blair's charity, the Africa Governance Initiative, operates in the three worst-affected countries: Liberia, Sierra Leone and Guinea.