. >> narrator: the government decided to treat ebola victims at the state hospital in the town of kenemahich already had a ward for lassa fever, a disease similar to ebola but less infectious. th but wiin days, the hospitalie was overrun with pnts. then the nurses started to die. (crying) >> if you go to the morgue, you see dead bodies, 15, 16, 17, 18 dead bodies all in body bags. then i start to wonder, "what is happening?" maybe this is the end. of the wor maybe everybody's going toie. >> narrator: far from containing the outbreak, the hospital was helping to spread it. will pooley, a british nurse, volunteered to work on the ebola ward. >> when a patient arrived, they'd walk in past these corpses that would be piling up across the path and sometimes next to the path. they were smelling quite badal until the bueam came, and it might take days. i was constantly gobsmacked that this sn't a bigger deal. like, people weren't... you know, this wasn't being shouted out. g >> narrator: ternment called in doctors without borders. the plan was to build a dedicated ebola clinicei in theboring di

they said, "we are going to the hospital, we are going to burn the kenema government hospital down."i was walking up to the unit, and there was this stream of nurses and lab techs walking at a very hurried pace past me t he other direction. and i coulhear this mob, an angry mob. and the who, they all ted,. so they got into their cars and drovf, leaving just a handful of people probably inside the whole hospitalen really, wh there was a risk of unthe hospital being overr. n arrator: the police usedhe tear gas to disper crowd. re the ets went quiet, for now. but sierra leone was on the brink of chaos. the outbreak had now killed more than 800 people in three countries. as the death count rose, doctors without borders had been urging the who to declare an international emergency. >> i said that i've been telling the world for the last few months that it's anun ecedented, out-of-control ebola epidemic. i don't have the authority, people don't listen to me, but you, you need to step up and declare it, because you have the authority and you have the legitimacy. >> we felt that if you simpl