Source: 24/7 News
(undated) -- Food safety groups are giving a bad grade to U.S. burger chains for using beef made with antibiotics.
Twenty-two of the top 25 fast-food places got an F in the report, produced by the Center for Food Safety, Consumer Reports and other groups.
The report gave a failing grade to top chains like McDonald's and Burger King for not having a policy about using beef raised without the use of antibiotics.
Wendy's got a D-minus.
Only two companies, Shake Shack and Burger-Fi, got an A rating.
The report says both chains serve only beef raised without antibiotics.