The World Health Organization says there's no sign that Ebola had been contained in the three West African countries that have borne the brunt of the disease. After a meet in Geneva, the WHO said the spread of Ebola had been prevented in Nigeria and Senegal but the overall picture remained bleak and the disease was still a global public health emergency. The WHO said exit screenings of people leaving those countries, Guinea, Sierra Leona and Liberia should be strengthened.