How do u disinfect an open wound without using alcohol

hydrogen peroxide

Explanation:

A saline solution made from a small amount of salt diluted in water works well since it is similar to the body's internal pH. Hydrogen peroxide is also used as a disinfectant for wounds. Or you can use a mild or diluted soap in water that works effectively to clean the wound or even some purified water. Then make sure to wipe the surface with clean gauze.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.