The World Health Organisation says the outbreak is 'moving fast'.

The AU has backed a plan that needs upwards of $319m to strengthen outbreak control in affected countries

New modeling from the CDC shows that if measures aren't taken immediately, this outbreak could sicken more than 20,000 people in the next three months.

"That scale is possible," said Jason Asher, director of CDC's Center for Forecasting and Outbreak Analytics, during a press briefing.

The World Health Organisation says the outbreak is 'moving fast'.

The figure marks an increase of 100 cases and 20 deaths from Friday, amid growing concern over the scale of the epidemic.

Health officials have warned the Ebola outbreak in the Democratic Republic of Congo and Uganda could become one of the largest on record after confirmed cases jumped to 471,…