Craig Spencer

Early symptoms of Ebola include fever and malaise.

Eventually, patients experience extreme vomiting and diarrhea, and losing all those fluids can kill them.

Healthcare workers try to save patients by replacing these fluids through IV, for instance.

But that can be hard in low-resource settings, says Craig Spencer, a physician at Brown University.

He treated Ebola patients in Guinea in 2014 and was hospitalized for the disease in the U.S.

He says that difference in care is likely why the vast majority of Ebola patients treated in the U.S.

survive, and so many in African countries die.

Jonathan Lambert, NPR News.