A recent piece on NPR reported on a study published in Environmental Health Perspectives that showed that large-scale organic poultry farms have fewer of a particular group of drug-resistant bacteria than their conventional cousins. The lead author characterized the differences as "dramatic."
Of course, no farm is completely free of pathogens, as the NPR authors point out. But if that's organic on a large scale, imagine what it might be like on a small-scale, organic poultry farm with free range birds. It would be nice to see a study done on that.