Ebola outbreak: Could epidemic infect 1.4m people?

The Ebola outbreak in West Africa is the deadliest occurrence of the disease since its discovery in 1976 - with more than 8,300 cases reported since March.

But without more concerted efforts to quarantine the epidemic, the number of cases could explode, experts warn.

BBC News explains - in 60 seconds.

Video produced by Michael Hirst