Spanish flu
Pandemic
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The 1918–1920 flu pandemic, also known as the Great Influenza epidemic or by the common misnomer Spanish flu, was an exceptionally deadly global influenza pandemic caused by the H1N1 influenza A virus. Wikipedia
Start date: February 1918
Deaths: 25–50 million (generally accepted), other estimates range from 17 to 100 million
End date: April 1920
Disease: Influenza
Suspected cases‡: 500 million (estimated)
Virus strain: Strains of A/H1N1