Influenza Pandemic of 1918–19 Chart: Quick Facts

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Infographic summarizing the 1918-19 influenza pandemic, including definitions of influenza and pandemic, origins, symptoms, reasons for the name Spanish flu, rapid spread factors, three pandemic waves, death tolls in the U.S. and worldwide, age group most affected, and comparison to other major pandemics. Key points include H1N1 virus with avian genes, spread during World War I, no vaccines or tests at the time, and estimated global deaths ranging from 25 to 50 million.

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