The World Health Organization says Ebola could infect more than 20,000 people across West Africa by the time the outbreak is over. The agency on Thursday launched a $490 million campaign to fight the epidemic that it says has killed at least 1,550 people and infected more than 3,000. The majority of cases have been in Liberia, Sierra Leone and Guinea. Nigeria reported two more cases Thursday, bringing the country's total to 15, with six deaths. VOA's Linord Moudou talks to Cynthia Areh of Channels TV, our broadcasting partner in Lagos, Nigeria, about Ebola.