30/1/1962, at a girls ' school by nuns in management, Tanzania, Kashasha three young girls began to laugh. However, other than these times laughing, ended after a few minutes, the three girls on the still ongoing jokes and quickly spread across the field, lasted several hours, even weeks, leading to the market to close on 18/4/1962 due to the number of students affected by up to 60%. Since then, this strange disease known as the Tanganyika laughter epidemic.
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