A Frenchman who was kidnapped over the weekend in Algeria appears to have been beheaded in a video that was posted online Wednesday.

Liberia, Sierra Leone and Guinea -- the three countries facing the biggest health crisis -- are also facing huge bills to try and contain the virus.

About 10 days ago, Lusa Khanneh took ill, but not in an Ebola kind of way.

CNN's Nima Elbagir reflects on a harrowing trip to Liberia where she covered the deadliest Ebola outbreak in history.