US President Barack Obama has renewed calls for Congress to approve $6bn (£3.8bn) in emergency aid to fight the deadly Ebola outbreak in West Africa.
The president made the plea on a visit to the National Institutes of Health, where he congratulated scientists on work towards a vaccine.
The WHO says 6,055 people have died in Liberia, Sierra Leone and Guinea.
The medical charity, Medecins Sans Frontieres (MSF), has again strongly criticised the international response.
The president made the plea on a visit to the National Institutes of Health, where he congratulated scientists on work towards a vaccine.
The WHO says 6,055 people have died in Liberia, Sierra Leone and Guinea.
The medical charity, Medecins Sans Frontieres (MSF), has again strongly criticised the international response.