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abstractpubmed· Abstract 2015· item PMID:26488485

Fosfomycin Resistance in Escherichia coli, Pennsylvania, USA. Fosfomycin resistance in Escherichia coli is rare in the United States. An extended-spectrum β-lactamase-producing E. coli clinical strain identified in Pennsylvania, USA, showed high-level fosfomycin resistance caused by the fosA3 gene. The IncFII plasmid carrying this gene had a structure similar to those found in China, where fosfomycin resistance is commonly described.