Smallpox 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.
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Smallpox 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.