The Spanish Flu had a great impact on the turnout of World War 2. Many soldiers died in the trenches the day they were infected, impairing the all the armies ability to fight for their countries. Approximately 28% of the Americans, about 675,000 people, died of the influenza. The outbreaks swept throughout North America, Europe, Asia, Africa, Brazil and the South Pacific. Soon after the Great War, the virus broke out across most of the countries of Europe. It was triggered by a world event and infected one-fifth of the world.