Ebola claims the lives of about 90% of the people it infects and the newest outreak, in Western Africa, is out of control. The outbreak began in February 2014 after several people in Guinea exhibited symptoms of the virus, but it has since spread to Liberia, Sierra Leone, and Nigeria. This is the first time the virus has moved into densely populated areas. The World Health Organization began assisting, in March 2014, to help control the outbreak. Efforts to mitigate the spread of the virus have been complicated by riots, poor health practices, and even attacks on make-shift hospitals which were set up to treat Ebola patients. One patient escaped from a treatment center, but later died from the virus. The first case in Nigeria was reported on July 25, 2014.
Guinea: 427 cases, 319 deaths Liberia: 249 cases, 129 deaths Sierra Leone: 525 cases, 224 deaths Nigeria: 1 case, 1 death (Lagos)

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