evidence: Almost exactly 100 years ago, one-third of the world's population found itself infected in a deadly viral pandemic. It was the Spanish flu. Its death toll is unknown but is generally considerd to be more than 50 million. [...] Around 50 to 100 million people were killed worldwide, according to Amesh Adalja, an infectious disease physician and senior scholar at the Johns Hopkins Center for Health Security. He puts the death rate from the 1918 epidemic at about 1 to 2% globally. [...] In a previous version of this story, we incorrectly said a third of the world's population in 1918-1919 died of Spanish flu. Actually, a third of the world's population became infected. In addition, the story had quoted President Trump as saying those who had the Spanish flu had a 50/50 chance of survival. That number does not match what has been found by experts and government and private research institutions. Also, the story said academics generally agree that 50 to 100 million were infected. The most common estimate of Spanish flu cases is about 500 million