In 1545, approximately 473 years ago, the Aztec nation crumbled. People began coming down with high fevers and headaches. Shortly after, they began bleeding from the eyes, mouth, and nose. Then, they died.
One of the worst epidemics in human history, a sixteenth-century pestilence that devastated Mexico’s native population, may have been caused by a deadly form of salmonella from Europe, a pair of studies suggest.