The word Quarantine comes from the Italian (seventeenth century Venetian) quarantena, meaning forty-day period. Quarantine can be applied to humans, but also to animals of various kinds.
The small island of Lazzaretto Vecchio (formerly known as Santa Maria di Nazareth), in the south part of the Venetian lagoon, was a quarantine colony for those with bubonic plague during the 14th-15th centuries.
1 The LORD said to Moses and Aaron, 2 "When anyone has a swelling or a rash or a bright spot on his skin that may become an infectious skin disease, he must be brought to Aaron the priest or to one of his sons who is a priest. 3 The priest is to examine the sore on his skin, and if the hair in the sore has turned white and the sore appears to be more than skin deep, it is an infectious skin disease. When the priest examines him, he shall pronounce him ceremonially unclean. 4 If the spot on his skin is white but does not appear to be more than skin deep and the hair in it has not turned white, the priest is to put the infected person in isolation for seven days. 5 On the seventh day the priest is to examine him, and if he sees that the sore is unchanged and has not spread in the skin, he is to keep him in isolation another seven days. 6 On the seventh day the priest is to examine him again, and if the sore has faded and has not spread in the skin, the priest shall pronounce him clean; it is only a rash. The man must wash his clothes, and he will be clean. 7 But if the rash does spread in his skin after he has shown himself to the priest to be pronounced clean, he must appear before the priest again. 8 The priest is to examine him, and if the rash has spread in the skin, he shall pronounce him unclean; it is an infectious disease.
See also: Lazaretto