I grow most of my own greens, so it's not an issue for me, but if I use store bought, I use a 50ppm chlorine soak on anything eaten raw. I don't have a spleen anymore (misplaced it on a mountain a while back), and shigella is BAD NEWS(tm) with a compromised immune system.
It's commonly spread by 3rd world workers in the field without sanitation facilites. Fecal splashing, I believe, is the technical term.
/johnny
“Fecal splashing”
Yum. Can’t wait to go home and fix a great big salad
Do you remember a few years back when George Lopez did an HBO gig in San Antonio? He stirred up some angry folks on the state board and I can't stand the racist now. Anyway, one of his not so funny jokes was illegal migrant workers wiping their behinds and smearing it all over the gringos' vegetables as payback.