SUPERBUG A strain of E. coli resistant to the antibiotic colistin has infected a woman in Pennsylvania (3-D rendering of an E. coli bacteria shown).
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A last-ditch weapon against drug-resistant bacteria has met its match in Pennsylvania.
A 49-year-old woman has tested positive for a strain of Escherichia coli resistant to the antibiotic colistin, researchers report May 26 in Antimicrobial Agents and Chemotherapy.