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This is the first report of ceftazidime-avibactam resistance caused by the blaKPC-33 mutation through the D179Y variant during the treatment of blaKPC-2-positive Klebsiella pneumoniae-related infections in China. The blaKPC-33-containing K. pneumoniae was susceptible to meropenem-vaborbactam, cefepime-zidebactam, tigecycline, and polymyxin B. The blaKPC-33 gene was located on a 77 551-bp transformable plasmid harboring qnrS1 and blaLAP-2. Detecting blaKPC-33-positive K. pneumoniae clinical strains is important for infection control.
Shi et al. (Thu,) studied this question.
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