I personally have contracted salmonella from contact with a snake. It was terrible, worst stomach cramps of my life (including convulsions and loss of consciousness), severe vomiting and explosive and uncontrollable diarhhea.
There are many strains of salmonella, you can get it from raw chicken, river water, reptiles and amphibians, and salmonella has the capacity to live on a dry surface (undisturbed) for up to TWO YEARS! Salmonella is fairly normal gut bacteria for herps.
Hand washing with normal soap after handling herps is all that is necessary to protect yourself from contracting it! Good handwashing should be a way of life for all herpers.
Day 10051 of life as a human on this planet... but who's counting?