African health ministers and world experts gather in Ghana to discuss Ebola outbreak . World Health Organization has warned that `` drastic action '' is needed to halt the epidemic . Doctors Without Borders , also known as MÃ©decins Sans FrontiÃ¨res , has been working to fight the epidemic since March . The outbreak is the largest in terms of number of deaths and geographical spread . It began last year when a nurse from Liberia contracted Ebola.
African health ministers and world experts gather in Ghana to discuss Ebola outbreak . World Health Organization has warned that `` drastic action '' is needed to halt the epidemic . The outbreak is the largest in terms of number of deaths and geographical spread . It began last year when a nurse from Liberia contracted Ebola.