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Volume 22, Number 9—September 2016

CME ACTIVITY - Research

Fluoroquinolone-Resistant and Extended-Spectrum β-Lactamase–Producing Escherichia coli Infections in Patients with Pyelonephritis, United States1

David A. TalanComments to Author , Sukhjit S. Takhar, Anusha Krishnadasan, Fredrick M. Abrahamian, William R. Mower, Gregory J. Moran, and EMERGEncy ID Net Study Group
Author affiliations: David Geffen School of Medicine at the University of California, Los Angeles (UCLA), Los Angeles, California, USA (D.A. Talan, A. Krishnadasan, F.M. Abrahamian, W.R. Mower, G.J. Moran); Olive View–UCLA Medical Center, Los Angeles (D.A. Talan, A. Krishnadasan, F.M. Abrahamian, G.J. Moran); Brigham and Women’s Hospital, Boston, Massachusetts, USA (S.S. Takhar); Harvard Medical School, Boston (S.S. Takhar); Ronald Reagan Medical Center, Los Angeles (W.R. Mower)

Main Article

Table 2

Uropathogens identified among US emergency department patients with acute uncomplicated and complicated pyelonephritis, July 2013–December 2014

Uropathogen No. (%)
Total, N = 521 Uncomplicated cases, n = 286 Complicated cases, n = 235
Escherichia coli 453 (86.9) 272 (95.1) 181 (77.0)
Staphylococcus saprophyticus 2 (0.4) 2 (0.7) 0 (0)
Staphylococcus aureus 4 (0.8) 0 (0) 4 (1.7)
Proteus sp. 4 (0.8) 3 (1.0) 1 (0.4)
Enterobacter sp. 5 (1.0) 1 (0.3) 4 (1.7)
Klebsiella pneumoniae 25 (4.8) 4 (1.4) 21 (8.9)
Enterococcus sp. 12 (2.3) 0 (0) 12 (5.1)
Pseudomonas sp. 7 (1.3) 0 (0) 7 (3.0)
Group B streptococcus 2 (0.4) 1 (0.3) 1 (0.4)
Other* 5 (1.0) 2 (0.7) 3 (1.3)

*Other pathogens were 2 Aerococcus urinae, 2 Citrobacter koseri, and 1 Salmonella species.

Main Article

1Preliminary results of this research were presented at the 2014 IDWeek Meeting, Philadelphia, PA, USA, October 8–12, 2014.

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