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A woman started dancing in the street. . .and she couldn’t stop.1518. Strasbourg, France. . .Within a week,,, 400 people joined her. . .No music... No reason...Feet bled. . .People collapsed… and died. . .Doctors were called in.....and prescribed more dancing. . .It didn’t help..Then it stopped.............No explanation. . .No one ever figured out why.