2183. Porin Mutations Potentiate the <i>in Vitro</i> Synergy of Meropenem-Vaborbactam (MVB), but not Ceftazidime-Avibactam (CZA) in Combination with Other Antibiotics against KPC-producing <i>Klebsiella Pneumoniae</i> (KPC-<i>Kp</i>)
Open forum infectious diseases