The director general of the World Health Organization Margaret Chan described Ebola as “unquestionably the most severe acute public health emergency in modern times” on Monday, according to the New York Times. More than 4,000 people have died of the virus, the majority in West Africa. The most affected countries are facing political collapse in the wake of the epidemic. Ebola actually emerged 40 years ago and was not countered with vaccines or medicines because it was confined to poor African countries. As the virus spirals out of control, Chan believes economic inequality becomes dangerously clear. Recently, Facebook CEO Mark Zuckerberg donated $25 million to the CDC to fight against the spread of Ebola.