@CNN: 25 of the top US burger chains were graded on their antibiotic policies in a new report released today. Only two chains received an A: Shake Shack and BurgerFi. The other 23 got a D minus or F. https://t.co/V6vwAPpgBO https://t.co/wSL3M4Trkh

@CNN: 25 of the top US burger chains were graded on their antibiotic policies in a new report released today. Only two chains received an A: Shake Shack and BurgerFi. The other 23 got a D minus or F. https://t.co/V6vwAPpgBO https://t.co/wSL3M4Trkh