I heard about this laughter epidemic in 1962 on the radio and thought I'd share it with everyone. Pretty strange and interesting...
Basic Story:
"Consider the bizarre events of the 1962 outbreak of contagious laughter in Tanganyika. What began as an isolated fit of laughter (and sometimes crying) in a group of 12- to 18-year-old schoolgirls rapidly rose to epidemic proportions. Contagious laughter propagated from one individual to the next, eventually infecting adjacent communities. The epidemic was so severe that it required the closing of schools. It lasted for six months."
Sources:
1)
http://cogweb.ucla.edu/Abstracts/Provine_96.html
2)
http://en.wikipedia.org/wiki/Tangany...ghter_Epidemic
VIDEO
In looking this up I came across this video (not related to the 1962 epidemic). It's practically impossible to watch this without laughing, so I thought I would share it. For those who aren't patient, drag the player to about 1:30.
http://www.youtube.com/watch?v=Z4Y4keqTV6w