I never would have believed that salmonella could be found in fresh raw tomatoes but apparently, as you can see in this video, a salmonella outbreak that has affected 17 states in the US was linked to raw tomatoes. Apparently the tomatoes were imported from outside the US.
I see no reason, what with the amount of food imports coming in from overseas, that this would not one day also take place in Australia. Although many constraints are put on our growers to insure the quality of of home grown produce, these same constraints are not put on cheaper imports.
I would say that this is another good reason why we should all buy Aussie products, even if we do have to pay a little bit more.