A Million Were Struck by This Mysterious Disease Before It Vanished : ScienceAlert…
The disease known as encephalitis lethargica, or the "sleepy sickness" affected a million people worldwide during and after the first world war, then it vanished, and has remained a mystery for the past century. The question that has never been answered is: what caused it?... #diseases #encephalitislethargica #pandemics #sleepysickness #health #medicalresearch