(Reuters) An Ebola outbreak that began in Guinea has turned into a cross-border crisis that could spread to more countries, the World Health Organization said on Thursday, calling for drastic action to halt the deadly epidemic.
Despite efforts by national health authorities and international aid organizations to contain its spread, the WHO has recorded 635 infections, including 399 deaths, in Guinea, Sierra Leone and Liberia since the outbreak began in February.
The crisis is already the deadliest outbreak since Ebola first emerged in central Africa in 1976, and the number of infections continues to rise.