[Hypersomnal syndromes observed in the 1957 grippal epidemic. Lethargic states-periodic sleep (Kleine-Levin syndrome)].
D006801:Humans; D007251:Influenza, Human / Q000150:complications*; D017593:Kleine-Levin Syndrome; D053609:Lethargy; D012890:Sleep; D012893:Sleep Wake Disorders / Q000209:etiology*
INFLUENZA/complications; SLEEP DISORDERS/etiology