so what is the correct symbol to use
A helix ...
So we have the most amount of votes for a logo with the wrong symbol... They should have been removed from the voting list.
This voting is useless. One can vote any logo into the first place via using proxies/anonymizers.
With ~100 total votes "Silver Caduceus" had 30%, now - 46%. So almost all of the newest votes are for this design.
It's a shame that LasersHurt doesn't want to see the obvious thing.