I was not aware of this before a long trip through wikipedia (triggered because I'd never seen that word before), but there's apparently some controversy over u

I was not aware of this before a long trip through wikipedia (triggered because I'd never seen that word before), but there's apparently some controversy over use of the Caduceus vs the Rod of Asclepius. https://en.wikipedia.org/wiki/Caduceus_as_a_symbol_of_medicine https://en.wikipedia.org/wiki/Caduceus_as_a_symbol_of_medici... Basically, the US Army used it by mistake and so it's taken over in the United States, but people think that the one-snake version (RoA) is more correct. The RoA is thought to be perhaps rooted in the treatment for Guinea Worm (or else based on a magical healing snake kept by Moses).