The 1918 influenza pandemic (also known as the Spanish Flu) was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes… - Tony Robbins

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The 1918 influenza pandemic (also known as the Spanish Flu) was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. It’s estimated that about 500 million people — one-third of the world’s population — became infected with this virus. The number of deaths was estimated to be at least 50 million worldwide, with about 675,000 occurring in the United States. This virus is still with us today, and is the reason for our annual flu shots.