Excerpt: “Different mechanisms can give rise to antibiotic-resistant bacteria. For example, the broad use of antibiotics in food-producing animals can lead to antibiotic resistance. Once this resistance is developed, the bacteria can spread worldwide. In November 2015, researchers from China discovered the mcr-1 gene, which makes bacteria resistant to colistin, an antibiotic of last resort. In 2016, the Department of Defense reported the discovery of E. coli bacteria carrying the mcr-1 gene in a patient in Pennsylvania. Further, a recent USDA and HHS search for colistin-resistant bacteria in food animals, retail meats, and people also found colistin-resistant E. coli in a pig intestine sample. Understanding and addressing this issue is complex from both a science and policy perspective.”
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