From 1915 to 1926 there was a mysterious worldwide epidemic of Encephalitis Lethargica. The disease, which attacks the brain, leaves some victims in a statue-like condition, speechless and motionless. It left 500,000 dead or incapacitated from it before mysteriously disappearing. – WTF Fun Facts
epidemic
WTF Fun Fact – Koro Epidemic
There is a well documented Koro (or genital retraction syndrome) epidemic that occurred in Singapore in late 1967.Men believed they were going to die from their penis shrinking after eating bad pork. – WTF Fun Facts
Source: http://theindependent.sg/the-day-the-shrinking-penis-epidemic-struck-singapore/
English Sweating Sickness
In the 15th and 16th centuries, the English sweating sickness epidemics killed thousands of people and then the disease disappeared. The contagious disease came on suddenly and could kill within hours. The cause and disease itself remains unknown. – WTF Fun Facts