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Laura Rogers of the Pew Campaign on Human Health and Industrial Farming says the issue is “often more emotional than intellectual.”

To farmers, she says, it often seems that public health advocates are telling them how to do their jobs. But she said the need for change will be even greater as the market responds to consumer demand _ grocery stores and restaurants now tout antibiotic-free meats.

“While this announcement today is a great first step,” Rogers said, “more work needs to be done.”