I think all reptile expo's need to have a good think about where they stand on issues like this as well and what precautions they need to take if they indeed still want to run them.
It's reason I stopped being involved in the Gladstone expo - I held a stall one year, never again have I been back with my reptiles or even to have a look. Snakes were being taken out of their enclosures and walked around the complex, fresh shed skins were on display and ended up everywhere including on my table - not to mention all the grabby hands (kids and adults alike) who were previously handling other people's snakes, not washing their hands, then touching anything and everything!
Don't get me wrong I think it's a good thing they are trying to do, but that just put me completely off as there was no regard for quarantine matters AT ALL.