Official : Obama seeks $ 1.5 billion for current response and $ 4.5 billion for contingency fund . The World Health Organization says more than 4,800 Ebola deaths have been reported . A Americans nurse 's assistant leaves the hospital after beating Ebola . In New York , Dr. Amber Vinson `` continues to show improvement , '' officials say .
Official : Obama seeks $ 4.5 billion for current response and $ 1.5 billion for contingency fund . The World Health Organization says more than 4,800 Ebola deaths have been reported . A Spanish nurse 's assistant leaves the hospital after beating Ebola . In New York , Dr. Craig Spencer `` continues to show improvement , '' officials say .