Can disease from humans live on fruits and vegetables after washing them?
vacant
Such as diseases illegal immigrants might harbor who work in the fields? (TB, Malaria, Chagas disease,Leprosy, Dengue, Polio, Hepatitus, Manburg disease) They have been observed urinating on produce in the fields.

yes soem dessesas can be very contaguos so they will stay there
Yes, diseases can transfer through those mediums. Actually, the virus or bacteria can stay alive and active even if the fruits or vegies are well-rinsed.
Just wash the produce good with water and a little soap and don’t spend so much time worrying about this. How long has you been eating fruits and veggies??? And NOW you’re worried about migrant workers hygeine??? Come on…control what you can and give yourself a break.