(Monica Akhtar, Lena Sun/The Washington Post)
Here's how scientists discovered the antibiotic-resistant superbug
The Post's Lena Sun visited Walter Reed Army Institute of Research in Silver Spring, Md., where scientists there identified a strain of bacteria resistant to the last-resort antibiotic, colistin. The bacteria was found in a Pennsylvania woman. Microbiologist Patrick McGann explains how his team identified the gene that gives the bacteria this resistance
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