Spectrum: Local Antimicrobial Stewardship, for Billings Clinic

Piperacillin-Tazobactam - Antibiogram Data

Billings Clinic
% of Isolates Susceptible

Proteus mirabilis100%
n = 205
Klebsiella species96%
n = 973
Pseudomonas aeruginosa95%
n = 331

Please note that quinolones do NOT provide adequate empiric therapy for serious gram-negative infections. Quinolones do not extend coverage over empiric β-lactams. Continued overuse is driving resistance.

Escherichia coli95%
n = 4800
Serratia marcescens94%
n = 38
Enterobacter cloacae82%
n = 187
Citrobacter freundii80%
n = 95