From Washington Post:

The Ebola epidemic sweeping West Africa could infect up to 500,000 people by the end of January, according to a new estimate under development by the Centers for Disease Control and Prevention.

The CDC projection assumes no additional aid by governments and relief agencies. But the United States this week launched a $750 million effort to establish treatment facilities with 1,700 beds in Liberia, the hardest hit country. And the U.N. Security Council voted unanimously Thursday to create an emergency medical mission to respond to the outbreak, with an advance team in West Africa by the end of the month.