My dad worked as a groundsman for the local council park, part of his job was clearing up after dogs who's owners had missed what they had just done
I explained this to our vets and asked what precautions we should take when we brought Bea home, they said all they did was change there clothes and wash there hands, if your dogs are up to date then that are just being over cautious new puppy parents I gess.
Clearly thinking of there new bundle of fur, can't be a bad thing