
If you go abroad the dogs are vetted in, and I think Rabies vaccination records taken (but as I had to use Pet Passport do s I may be wrong.
They used to Vet in at UK shows long ago, but logistically with the numbers at the big shows it would be a nightmare. Actually more likelihood of spreading disease handling all those dogs one after another.
I always think it good practise with those judges who use wipes for their hands after each dog, after all examining mouths would be an easy way to spread Kennel Cough for example.