Ebola survivor William Pooley on his return to Africa

William Pooley made international headlines when he was airlifted to London to receive treatment after he contracted the Ebola virus while volunteering in a hospital in Sierra Leone.

Having made a full recovery, he talks to the BBC about how it felt taking the last doses of the vaccine ZMapp in a developed world hospital, knowing his friends and colleagues in Africa would go without.

He also explains why he is planning to return to help fight the spread of Ebola.