Media playback is unsupported on your device

WHO: Ebola taking 'heavy toll' on health staff

26 August 2014 Last updated at 16:46 BST

An "unprecedented" number of doctors and nurses have been infected with Ebola virus in west Africa, according to the World Health Organization.

More than 240 health care workers have developed the disease in West Africa, and more than 120 have died.

Meanwhile, doctors in London continue to treat 29-year-old William Pooley who contracted Ebola in Sierra Leone.

Jon Brain reports.

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.