Nigeria/ Johannesburg, Aug 09 (ANI): The World Health Organization said that the world's worst outbreak of Ebola that has killed nearly 1,000 people in West Africa represents an international health emergency and could continue spreading for months. Nigeria became the third African nation, after Sierra Leone and Liberia, to declare a national emergency as the region's healthcare systems struggle to cope with the advance of the disease. Nigerian President Goodluck Jonathan's spokesman Reuben Abati outlined the plan to help battle the deadly Ebola virus, after Jonathan declared a national state of emergency, and approved 1.9 billion naira of emergency funds to contain it.