Antibiotic Resistance Genes Found in a Colorado River System

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The pristine Platte river picks up microbial genes for antibiotic resistance as it flows past human settlements. Image: Philip Nealey/Getty

In the Rocky Mountains, the South Platte River system flows east through the Coloradan plateau that has plenty cattle ranches, sheep pastures, dairy farms, and water treatment plants. A new survey shows how human activities have affected the concentrations of antibiotic-resistant genes in the watershed.

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