What is the meaning of encephalitis lethargica?

An encephalitis that was epidemic between 1915 and 1926; symptoms include paralysis of the extrinsic eye muscle and extreme muscular weakness.
- synonyms: sleeping sickness, sleepy sickness, epidemic encephalitis, lethargic encephalitis

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APA	WordNet. (2010). encephalitis lethargica. Retrieved September 21, 2026, from http://smartdefine.org/encephalitis_lethargica/definitions/1272871
Chicago	WordNet. 2010. "encephalitis lethargica" http://smartdefine.org/encephalitis_lethargica/definitions/1272871 (accessed September 21, 2026).
Harvard	WordNet 2010, encephalitis lethargica, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/encephalitis_lethargica/definitions/1272871>.
MLA	WordNet. "encephalitis lethargica" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/encephalitis_lethargica/definitions/1272871>

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