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Safety

Raw hamburger may contain harmful bacteria that can produce food-borne illnesses such as Escherichia coli O157:H7, due to the occasional initial improper preparation of the meat, so caution is needed during handling and cooking. Because of the potential for food-borne illness, the USDA, recommends hamburgers be cooked to an internal temperature of 160 °F (71 °C). If cooked to this temperature, they are considered well-done.