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epidemic; plague; pestilence
中世には疫癘が何度も都を襲った。
In the Middle Ages, plagues struck the capital repeatedly.
疫癘の蔓延を防ぐため港が封鎖された。
The port was sealed to prevent the spread of the epidemic.
疫癘に苦しむ人々のために医師が派遣された。
Doctors were dispatched to help those suffering from the plague.