The Plague That Makes You Dance To Death
The Dancing Plague of 1518 was an event that caused more than 400 people to dance in the streets of Strasbourg, France for 2 months, leading to the deaths of dozens of people. This really happened.
Some of the solutions for the Dancing Plague include ergot poisoning, mind-controlling parasites similar to toxoplasma gondii or the cordyceps fungus, and mass hysteria, also known as mass psychogenic illness. Many also attribute the Dancing Plague to St. Vitus, and have called it the Plague of St. Vitus.