There were several historic anniversaries in 2018, including the end of World War I and the beginning of the worst pandemic in history, the Spanish flu. Scientists have learned a great deal about the virus that caused it, but despite what we know, it could happen again.
This virus changed the world. It’s estimated that one third of the world population got sick, and between 50 and 100 million people died. That’s far more than the number killed in World War I. The Spanish flu affected the outcome of the war, it almost brought Switzerland to a civil war, and it boosted the independence movement in India.