'Plague' in the Bible

if the mark is greenish or reddish in the garment or in the leather or in the warp or woof or in any article made of leather, it is an infestation of leprosy and shall be shown to the priest.

then the priest shall order that they wash the thing in which the mark occurs, and he shall quarantine it for seven more days.

This is the law for the one in whom there is an infection of leprosy, whose means are limited for his [ceremonial] cleansing.”