"quarantine" (verb) against disease, 1801; antedating 1821--

[Joel S. Berson]

"Arrived, ships ... Christiansburg, ---, Cadiz; ... By the
Christiansburg we learn, that the fever at Cadiz has not entirely
abated. The ship is quarantined."

Alexandria [Virginia] Advertiser and Commercial Intelligencer; Date:
03-12-1801; Volume: I; Issue: 79; Page: [3], col. 2.  EAN.

Antedates OED3 (Dec. 2007), quarantine, v., sense 1.b., 1821--.

Joel

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