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Entry 51 of 240Pandemic

The Plague of Athens

430 BCE/Aegean/Athens
Today Athens, GreeceSpan Peloponnesian War era · 431–404 BCE

In the second year of its war with Sparta, Athens crammed its rural population behind the city walls — and a mysterious plague swept the crowds, killing perhaps a quarter of the people, including the great leader Pericles himself. The historian Thucydides, who caught the disease and survived, recorded not just the dying but the moral collapse: with death everywhere, people abandoned law and restraint. A pathogen loose in a dense population had rewritten politics and morality alike, in the space of a single summer.

◆ Worth knowingThucydides caught the plague, survived, and coldly recorded its symptoms so future generations could recognize it — one of history's first clinical case reports. We still can't be certain what the disease was.
◆ The mechanismPandemic

A pathogen spreads through a population and reshapes its demography, economy, and beliefs at once.

Also: Demographic shock & recovery · Legitimating-narrative collapse

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