Disease X has been added to the World Health Organization’s list of priority diseases this year, along with Ebola and Zika.
Why are they a priority? The organization says they have the potential to cause a public health emergency and there are not enough effective vaccines.
Disease X is currently unknown but the World Health Organization says it “represents the knowledge that a serious international epidemic could be caused by a pathogen currently unknown to cause human disease”
This epidemic could lead to millions of deaths. That’s why the organization is pushing for more research for the unexpected: potential diseases stemming from an unknown source, created by nature or even humans.