Journal
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
Volume 61, Issue 12, Pages -Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.01183-17
Keywords
AmpC; G183D; Pseudomonas aeruginosa; ceftolozane-tazobactam
Categories
Funding
- National Institute of Allergy and Infectious Diseases [R01AI090155, R21AI117338]
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Ceftolozane-tazobactam is a cephalosporin-beta-lactamase inhibitor combination that exhibits potent in vitro activity against Pseudomonas aeruginosa, including strains that are resistant to other beta-lactams. The emergence of ceftolozane-tazobactam resistance among clinical isolates of P. aeruginosa has rarely been described. Here we characterized ceftolozane-tazobactam-resistant P. aeruginosa strains recovered from a patient who was treated with this agent for 6 weeks for a recurrent wound infection. The results showed that the resistance was mediated by a single AmpC structural mutation.
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