Now? You've clearly never heard of the 1518 Dance Plague: https://en.m.wikipedia.org/wiki/Dancing_plague_of_1518 https://en.m.wikipedia.org/wiki/Dancing_plague_

Now? You've clearly never heard of the 1518 Dance Plague: https://en.m.wikipedia.org/wiki/Dancing_plague_of_1518 https://en.m.wikipedia.org/wiki/Dancing_plague_of_1518