Defilement: Caused by Leprosy
Source: Nav
Leviticus 13:3, 44–46
The priest is to examine the infection on his skin, and if the hair in the infection has turned white and the sore appears to be deeper than the skin, it is a skin disease. After the priest examines him, he must pronounce him unclean. / the man is diseased; he is unclean. The priest must pronounce him unclean because of the infection on his head. / As long as he has the infection, he remains unclean. He must live alone in a place outside the camp.
Leviticus 14:1
Then the LORD said to Moses,
Leviticus 22:4–7
If a descendant of Aaron has a skin disease or a discharge, he may not eat the sacred offerings until he is clean. Whoever touches anything defiled by a corpse or by a man who has an emission of semen, / or whoever touches a crawling creature or a person that makes him unclean, whatever the uncleanness may be— / the man who touches any of these will remain unclean until evening. He must not eat from the sacred offerings unless he has bathed himself with water.