this post was submitted on 17 Feb 2025
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Today I Learned (TIL)

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You learn something new every day; what did you learn today? Submit interesting and specific facts about something that you just found out here.

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The original post: /r/todayilearned by /u/Only_Currency5789 on 2025-02-17 12:22:22.

Original Title: TIL that in 1962, a mysterious laughter epidemic broke out in Tanganyika (now Tanzania), starting with three schoolgirls and spreading uncontrollably to over 1,000 people. It lasted for months, forcing schools to shut down, baffling doctors, and showing how mass hysteria can spread like a virus.

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