Modelling from US CDC shows Ebola spread could be on ‘dangerous trajectory’, but experts warn outbreaks can be very hard to predict Modelling from US CDC shows Ebola spread could be on ‘dangerous trajectory’, but experts warn outbreaks can be very hard to predict Central Africa’s Ebola outbreak could spread to be similar in scale to the worst outbreak in history, west Africa’s 2014-2016 outbreak that killed more than 11,000 people, according to a new analysis by US health officials. The US