World Health Organization Warns Next Epidemic Disease Could Be Unknown—or Man-Made

Police officers wear protective suits and breathing apparatus in London Road cemetery as they continue investigations into the poisoning of Sergei Skripal who was found critically ill on a bench in Salisbury on March 10, 2018, in Salisbury, England. Chris J Ratcliffe/Getty Images

The World Health Organization has added a new disease to the list of pathogens, which could hit humans with a devastating effect.

This one is called “Disease X.”