Community-Acquired Multi-Drug Resistant Escherichia coli in a Patient Presenting With PyelonephritisDinani, Amreen MD*; Urban, Carl PhD*†‡; Colon-Urban, Rita PhD§; Wehbeh, Wehbeh MD*†Infectious Diseases in Clinical Practice: January 2011 - Volume 19 - Issue 1 - p 59-60 doi: 10.1097/IPC.0b013e3181e928bc Case Reports Abstract Author Information TEM and SHV extended-spectrum β-lactamases (ESBLs) used to be the dominant ESBLs in the 1990s, but more recently, the emergence of CTX-M enzymes have been increasingly recognized worldwide. Gram-negative rods harboring these β-lactamases represent a significant challenge to both clinicians and microbiologists due to the increasing number of reported cases of bacteria-producing ESBLs from the community. We highlight the case of a CTX-M-15-producing Escherichia coli urinary tract isolate causing infection in a patient from the community with no significant risk factors for acquiring E. coli harboring bla CTX-M. From the *Department of Medicine, and †Division of Infectious Diseases, New York Hospital Queens, Queen, NY; ‡Department of Microbiology, Weill Cornell Medical College, New York City, NY and §Department of Biology, SUNY College at Old Westbury, Old Westbury, NY. Correspondence to: Amreen Dinani, MD, Department of Medicine, New York Hospital Queens, Queens, NY. E-mail: firstname.lastname@example.org. The authors have no funding or conflicts of interest to disclose. © 2011 Lippincott Williams & Wilkins, Inc.