Smallpox in the Americas


1520-smallpox-in-the-americas-1.jpgSmallpox is believed to have arrived in the Americas on a Spanish ship. As soon as the ship landed in Mexico, the infection began its deadly spread through the continent, killing at least one-third of the indigenous population, who had never been exposed and had no immunity.

World Population : 170,060,000

Key:   1,000,000 People    1,000,000 People (Annotated)    Milestone

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