encephalitis lethargica epidemic of 1915β1928 References encephalitis lethargica epidemic of 1915β1928 pandemic Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of EncyclopΓ¦dia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: encephalitis lethargicaAn encephalitis lethargica epidemic occurred from 1915 to 1928. The disease was first described medically in 1917, though numerous possible forerunners dating back to the 16th century have been identified. Read MoreAn encephalitis lethargica epidemic occurred from 1915 to 1928. The disease was first described medically in 1917, though numerous possible forerunners dating back to the 16th century have been identified. Read More