Level 3 biohazard suits would be just as good and a lot less expensive.
That and other things I understand are problems in horrifically poor countries like Sierra Leone and Liberia like reusing needles, not have enough clean hot water and disinfectant, some of the local medical staff not having proper training and a good understanding of dealing with biohazards. That and I read that the so called isolation wards in some of these African hospitals are little more than cinder block buildings with no AC or contained ventilation systems. Imagine wearing a level 3 biohazard suit in sweltering heat and humidity.
Also the medical personnel they do have are in very short supply and overworked leading to the mistakes and sloppiness that comes from exhaustion.
I dont think robotics have gotten to the point they could give the proper intensive care necessary to treat critically ill patients and are not a cost effective solution. But perhaps one day.