A South African researcher inside a mobile lab in Sierra Leone
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Sierra Leone declares four day Ebola lockdown

6 September 2014 Last updated at 18:57 BST

Sierra Leone - one of the countries worst hit by West Africa's Ebola outbreak - has announced a four-day lockdown to try to tackle the disease.

From 18 to 21 September people will not be allowed to leave their homes, a senior official said.

Tulip Mazumdar reports.