Spanish Influenza

The Spanish flu, also known as the 1918 flu pandemic, was an unusually deadly influenza pandemic caused by the H1N1 influenza A virus. Lasting from February 1918 to April 1920, it infected 500 million people – about a third of the world's population at the time – in four successive waves. 
Number of deaths: 50,000,000
Start date: 1918
Virus strain: Strains of A/H1N1
End date: 1920
Suspected cases‡: 500 million (estimate)
Disease: Influenza
Start Place: Spain
==Credits==
Credits to Wikipedia
Category:Respiratory system
Category:Pandemic
Category:Deadly