By Lisa Maria Garza and Richard Valdmanis
American Marines scrambled to add Ebola treatment beds in Liberia on Friday, while the U.S. and Britain readied new disease screenings for passengers arriving at their airports from West Africa. Doctors tried out experimental drugs in a global battle against the deadly sickness.
The UN said nations must all work together — and fast — or "the world will have to live with the Ebola virus forever."
The death toll in West Africa passed 4,000 for the first time in the World Health Organization's count of confirmed and suspected Ebola cases. The hardest-hit country is Liberia, where 2,316 people have died. The death toll in Sierra Leone and Guinea stands at nearly 1,000 respectively, according to the WHO.