Nine years ago, an E. coli outbreak led to an expensive, labor-intensive change to the way a lot of our farms operated. But things didn’t get better—in fact, they got worse.
Unless the food is irradiated right before they serve it to you (plate included) it doesn’t really stop supply chain contamination or cross contamination at processing/prep.
The best system would be to package products in totally sealed packages and then irradiate with a monitor mark on each package to ensure proper dose is delivered. But I highly doubt food irradiation does this as it would cost too much for all the extra packaging, radiation sensitive dosing labels, and QA/QC required.
Pascalization is an interesting sterilization(ish) technique which literally crushes everything under pressures so high not much survives the process.