Survives boiling?
I suspect it has to do with the peeling and packing. And why would you buy hard boiled eggs? How hard is it to make them at home?
I’ve been craving deviled eggs. Add a bit of onion, fresh garlic, mustard and Miracle Whip. Yum! (But I have 2 freezers full of the last 2 holiday’s food!)
Indeed, its very likely somewhere else in the process. Or someone handling incoming eggs is transferring to other parts of the plant, post boiling. Even the air-flow and venting could be pushing bacteria in the wrong direction.