'Chronic' in the Bible

The priest is to examine the contagion on the seventh day. If the infection has spread on the clothing, in the woven material, the knitted material, or in the leather, no matter the purpose for which the leather material had been manufactured, the contagion is a chronic fungal infection. It's unclean.

"Incinerate the clothing, the woven material, the knitted material (whether wool or linen), or any of the leather articles on which the contagion is found, because it's a chronic fungal infection. It is to be incinerated.

and the priest comes, undertakes an examination, and determines that the contagion has spread in the house, it's a chronic fungal infection in the house. It's unclean.