An engraving by Hendrik Hondius portrays a similar outbreak in the 1560s.
In July of 1518, dancing mania – a phenomenon that occurred across Europe for several centuries – hit Strasbourg, Alsace (France). Approximately four-hundred people danced themselves to exhaustion, and even to their deaths.
The plague began when a woman named Mrs Troffea began to dance in the street.
At the time, it was decided that the people could be cured with more dancing, and so musicians were hired to encourage them – which resulted in more deaths.
One modern-day theory suggest that consumption of fungi containing psychoactive chemicals (similar to LSD) was to blame. Mass hysteria has also been suggested.