Category: Encephalitis Lethargica

Categories: Infectious Diseases


Encephalitis lethargica or von Economo disease is an atypical form of encephalitis. Also known as "sleepy sickness" (though different from the sleeping sickness transmitted by the tsetse fly), it was first described in 1917 by the neurologist Constantin von Economo and the pathologist Jean-René Cruchet. The disease attacks the brain, leaving some victims in a statue-like condition, speechless and motionless. Between 1915 and 1928, an epidemic of encephalitis lethargica spread around the world; no recurrence of the epidemic has since been reported, though isolated cases continue to occur.


Person Profiles (9)

14 Apr 1882 Somerset Township, Hillsdale, Michigan, United States - 18 Feb 1891
28 Mar 1918 Raton, Colfax, New Mexico, United States - 10 Feb 1933
11 Feb 1840 Henry County, Tennessee, United States - 14 Nov 1934
26 Nov 1904 Slane, Co Meath, Ireland - 27 Dec 1918 photo
08 Apr 1906 Wayne, Tennessee, United States - 27 Jan 1923
1860 France - bef 1930
abt 1874 Iowa - 20 Jan 1927 photo
abt 1893 Hamilton, Ontario, Canada - 07 Mar 1939
15 Nov 1879 Missouri, United States - 23 Apr 1926




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