>It infected 500 million people across the world, including remote Pacific islands and the Arctic, and killed 50 to 100 million of them—3 to 5 percent of the world's population at the time—making it one of the deadliest natural disasters in human history.
1918 was just a bad year, too.
https://en.wikipedia.org/wiki/1918_flu_pandemic
>It infected 500 million people across the world, including remote Pacific islands and the Arctic, and killed 50 to 100 million of them—3 to 5 percent of the world's population at the time—making it one of the deadliest natural disasters in human history.