Compassionate use of β-lactam enhancer/β-lactam combination zidebactam/cefepime (WCK 5222) for the treatment of recurrent pyelonephritis caused by extensively drug-resistant Klebsiella pneumoniae with high zidebactam/cefepime: A case report. Indian J Case Reports. 2026;12(2):73-75. doi:10.32677/ijcr.v12i2.7939