The Ague reference article from the English Wikipedia on 24-Apr-2004
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Ague

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Ague - the translation in Lev. 26:16 (R.V., "fever") of the Hebrew word kaddah'ath, meaning "kindling", i.e., an inflammatory or burning fever. In Deut. 28:22 the word is rendered "fever."

From Easton's Bible Dictionary (1897)

Ague is an older English word for malaria.