en_tn/num/05/01.md

infectious skin disease

This refers to leprosy which is a sickness that affects the skin and easily spreads to other people.

oozing sore

This can refer to an open cut that is leaking bodily fluids.

you must send

Here the word "you" is plural and refers to the people of Israel. (See: rc://en/ta/man/translate/figs-you)