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What is the significance of in vitro selection in identifying aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae? 


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In vitro selection is a significant method for identifying aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae . This method involves subjecting the bacteria to a multi-step selection assay to induce resistance to aztreonam/avibactam. Through this process, mutations can occur in genes such as OmpK36 and KPC, which are associated with resistance to β-lactams and β-lactam/β-lactamase inhibitor combinations . The selection of aztreonam/avibactam resistance can have collateral effects on the susceptibility to other antibiotics, such as meropenem/vaborbactam . By studying the mutations obtained through in vitro selection, researchers can gain insights into the mechanisms of resistance and the potential for the transfer of resistance traits . This information is crucial for understanding the development and spread of resistance in dual-carbapenemase-producing K. pneumoniae and can aid in the development of effective treatment strategies .

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The provided paper does not mention in vitro selection or aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae.
The provided paper is about resistance to aztreonam-avibactam in Escherichia coli, not Klebsiella pneumoniae. Therefore, the paper does not provide information on the significance of in vitro selection in identifying aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae.
The provided paper does not discuss the significance of in vitro selection in identifying aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae.
The provided paper does not mention the significance of in vitro selection in identifying aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae.
The provided paper does not mention aztreonam/avibactam resistance in dual-carbapenemase-producing Klebsiella pneumoniae.

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