Susan Thixton reports here:

small excerpt from her report to consider:

"If meat used in raw pet food is sourced from human grade suppliers – that means that human food meats are of the exact same antibiotic-resistant bacteria risk. As evidenced by testing performed in the U.S. – human food meats are a slightly higher risk of antibiotic-resistant bacteria than was found in the Swiss pet food study. Based on U.S. federal government testing, the Environmental Working Group put together this chart of meat tested in the U.S. – purchased from grocery stores":