Trace the problem chain for the following scenario: In December, 2013, a young boy in the remote Guinean village feel ill with a mysterious illness characterized by fever, black stools and vomiting. He died two days later. The disease passed to other family members, and then to healthcare workers and the broader village. By the end of November, 2014, the estimated number of cases is 13,767. The estimated historical death rate for Ebola outbreaks is 50%. This is due to the Lack of effective Ebola vaccine and treatment: Progress on such a vaccine has been slow and the development of 4 promising vaccines is stopped because the local governments don't provide supports. They belief that Ebola is an "African" disease consequently their hospitals and staffs were not unprepared for Ebola response.