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Source of antibiotic resistance unclear

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A common criticism of raising livestock is the use of antibiotics to promote herd health. While antibiotics are one of the pinnacles of modern medicine, many are concerned that their application in animals that later become food could lead to antibiotic-resistant pathogens in humans.

Veterinarian Dr. Craig Rowles raises pigs near Carroll and says the causal pathway by which epidemiologists might trace a resistance to antibiotics does not by necessity lead back to their ingestion by livestock.

Dr. Rowles is also Vice President of Market Development on the Iowa Pork Producers Association Board of Directors.