Which of the following would help reduce the risk of human infection by

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All of these choices can help reduce the risk of human infection by E. coli in beef. Steam-washing animals prior to slaughter can remove surface contamination. Adequate refrigeration of beef by grocery stores can prevent bacterial growth. Cooking beef to an internal temperature of 160°F can kill any bacteria present. Development of a cattle vaccine can reduce the prevalence of E. coli in the animals. Using all of these methods together is the most effective approach.

Which of the Following Would Help Reduce the Risk of Human