Abstract
Background: Snake envenomation is a serious public health threat in the rural areas of Asian and African countries. To date,
the only proven treatment for snake envenomation is antivenom therapy. Cross-neutralization of heterologous venoms by
antivenom raised against venoms of closely related species has been reported. The present study examined the cross
neutralizing potential of a newly developed polyvalent antivenom, termed Neuro Polyvalent Snake Antivenom (NPAV).
NPAV was produced by immunization against 4 Thai elapid venoms.