Carol, one way you can prevent getting sick from your eggs is when you crack an egg open, don't put the empty shell back in the carton. A lot of home cooks do this. The salmonella in inside the egg, not on the outside on the shell. Thus when you put the empty shell back into the carton the salmonella is now exposed to everything in that carton. Just a drop of the small amount still in the shell dripping on to the outside of the other eggs in the carton is one way of spreading the salmonella. The next time you take eggs out of that carton, you are running the risk of salmonella poison. And like meat, you should wash your hands after handling eggs.
I am not surprised that Tyson tested the highest. They have been sited more than once for the condition of their facilities. I never buy Tyson products. Frozen or fresh.