Ecoli can’t survive proper cooking, the key is that no matter where ground meat comes from, don’t it it raw or undercooked.
If you eat a burger that is pink in the middle, I don’t care if its the best quality meat you can find, you are taking a chance at an ECOLI infection.
I personally think irradiation should be used on all industrial produce and ground meat products prior to processing. This would virtually eliminate the risk of E-Coli outbreaks.. but can’t have that word “radiation” out there, that spooks folks.
It seems that the word "ammonia" has it's own ability to scare.