1278 The name `Choros-`, `St. Vitus-`or `Maniac Dancing` was adopted after a group of 200 people danced so spiritedly on a bridge, above the Maas river in Germany, that it collapsed, killing many. Survivors were treated in the nearby chapel St. Vitus. *** A group of people in Aix-la-Chapelle uncontrollably dancing in the streets until exhaustion, foaming from the mouth, convulsing and hallucinating (1374). The `Dancing sickness` in Germany: in Cologne 500, in Metz 1100 people dance in the streets. Music and dance seem to be the only effective remedy against the ergot-gangrene. The mania reaches Strasbourg in the year 1418 when thousands of dancers fill the streets to `rock around the clock`.