In other news from West Africa, a medication has shown effectiveness in treating some patients with Ebola. The drug, favipiravir, appears to have cut the mortality rate in half for patients with low to moderate levels of the virus. The news comes as the World Health Organization has announced a rise in weekly cases of Ebola for the first time this year, with 124 new cases confirmed last week in Guinea, Sierra Leone and Liberia. About 9,000 people have died in the outbreak.