By the end of 1918, 35% of Cleveland’s population had contracted either influenza or developed pneumonia

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By the end of 1918, 3.5% of Cleveland’s population had contracted either influenza or developed pneumonia. 3,600 people died in the autumn of 1918, and 800 more died in early winter of 1919.

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Source: Influenza Encyclopedia, University of Michigan Center for the History of Medicine
Credit: Courtesy University of Michigan Center for the History of Medicine.