Earlier quoted context omitted.
You are protected in two ways: The first, and by far most important is that unlike ground meat, your bacterial concerns are almost entirely on the surface. Unless something very very very wrong has occurred in the processing and transport chain, bacteria will not have penetrated into the meat. And if it's gotten bad enough that they have, you will almost certainly be able to see and smell it. And the surface is cooke…
Great answer. Just to add, this is with red meat where E. Coli is the main concern. That exists in the gut of the animal and that bacteria can travel to the surface of the muscles during the butchering process. Poultry on the other hand is mainly concerned with Salmonella which does live in the muscles of the animal. That's why people aren't ordering rare chicken breast.
This way undersells what's actually happening: fecal matter from the intestines gets onto your meat. This shouldn't happen with proper practices.