Agkistrodon contortrix
Most common venomous snake bite in eastern US. Usually not life-threatening.
Also Known AsHighland Moccasin
FamilyViperidae
GenusAgkistrodon
RegionNorth AmericaEastern United States
Misidentification risk
Copperhead
Lethality weighted 55% (potency × yield). Clinical weighted 45% (real-world CFR).
Multiplicative scalers - amplify or reduce existing danger, can't create it from nothing.
Speed = antivenom window. Delivery = fang efficiency. Encounter = exposure × temperament.
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Pain at bite site, Swelling, Tissue damage
Nausea or vomiting