I work in an immunology research lab (admin staff)- our patients have NO immune system. I keep my snake pictures up in my lab office for all to see- and I have asked my boss, she is completely unconcerned about about my herpetology- much more concerned that people wash their hands. Some day count the number of times you touch your face and then food, other's hands, surface shared by co-workers, etc!
My ex once tried to run this salmonella jazz on me- gave our parent coordinator a local schlock writer's newspaper article (trying to stir up trouble for local schools who have snakes in classes) that was rabidly anti-reptile and horrible science.
The PC didn't bother to do research, but she still shot down the ex, based purely on the cleanliness of my set-ups- although I am now legally banned from washing herp stuff in the sink with eating utensils (I use my utility room deep sink anyway! And of course we use hand wash all the time!).
I did the research- if you want to spend your time educating your co-workers just google on "Salmonella". There is an excellent site on the FDA
http://www.foodsafety.gov/~mow/chap1.html
and CDC
http://www.cdc.gov/ncidod/dbmd/diseaseinfo/salmonellosis_g.htm
Unfortunately many agencies continue to pass along anti-reptile messages. Actually, Salmonella is several strains of common bacteria, by a huge margin usually food-borne, or else passed from person-to-person, usual case is mild-to-moderate diarrhea, and you are more likely to get it from a pet mammal than a reptile (I would love to see a graph of pet cases broken out by species- I'd guess most are goats and pet pigs!).
Reptile culprits are usually specimens forced to live in contact with moist droppings- one reason I use a deep layer of absorbent mulch in my tanks- I am against astroturf, blanket-type materials and newspapers.
Iguanas are high on the list of transmitters as they are often inadequately housed- not the iguana's fault!
Someone take my ex-wife...PLEASE!