Actually, Copperhead bites that result in death are just about unheard of. The current recommended treatment (except for small children, facial bites and those showing signs of an allergic reaction) is simply monitor the bite in-hospital, as most of the treatments for snake bites (like antivenin and fasciotomy) can have longer-lasting ill effects than a copperhead bite.
I'm a snake person, and the crazy stuff people consider facts about snakes is way, way worse than any of the 'dumb things' people say about my chickens.