Horror, Sleaze and Trash.

This laughter epidemic that shut down 14 schools

On Jan. 30, 1962, at a boarding school near Tanzania’s border with Uganda, three girls started laughing uncontrollably. The laughter fit spread throughout the school, affecting 95 students. This laughing epidemic forced the school to temporarily close, and the students were sent home. It spread to nearby villages and finally died off after 18 months.

In total, 14 schools shut down and over 1,000 people were affected. The cause of the epidemic was hypothesized to be stress. (Source)