In 1962, a “laughter epidemic” swept across the western shore of Lake Victoria, then part of Tanganyika and now Tanzania.
It was triggered on January 30th by three girls from a boarding school in Kanshasa. More than a thousand people in two villages were affected by uncontrollable laughter, which eventually led to pain, fainting, flatulence, respiratory problems, itching, crying spells, and random screaming. Fourteen schools had to be temporarily closed.
**Source(s):**
.- Bartholomew, Robert E. (2001). *Little Green Men, Meowing Nuns and Head-Hunting Panics: A Study of Mass Psychogenic Illness and Social Delusion*. Jefferson, North Carolina: Macfarland & Company. p. 52. ISBN 0-7864-0997-5. #local