His racist family members who go on TV and talk about how America sucks already knew Duncan had Ebola when he got here, there is no other explanation..they had already protected themselves from this disease. It is absolutely IMPOSSIBLE for someone to live in the same house, use the same toilet, sleep in the same bed as someone who had Ebola and not get it, yet a nurse who followed every single procedure ends up getting it
Not impossible at all. Duncan walked to the ambulance. Granted he had symptoms and was shedding virus, but the nurse in the hospital was probably tasked with cleaning virus-laden fluids off his body. She would have much more exposure and all she had to do was get a little of it on her while she took off the protective suit.