A woman who died of Ebola this week in Sierra Leone potentially exposed at least 27 other people to the disease, raising the risk of more cases just as the deadliest epidemic on record appeared to be ending. The World Health Organization confirmed on Friday a new death from Ebola in Sierra Leone just a day after west Africa celebrated the end of an outbreak which killed 11,000 people. A 22-year-old woman was taken ill, near the Guinean border on Thursday last week and died on Tuesday, local health officials confirmed she was killed by Ebola. The new case in Sierra Leone is especially disquieting because authorities failed to follow basic health protocols, according to the report. Sierra Leonians have expressed their disappointment at this latest turn of events.