18 April 2026
: Case report 
Cefiderocol Heteroresistance in NDM-Producing Enterobacterales: A Complex Polymicrobial Infection Successfully Salvaged With Ceftazidime-Avibactam Plus Aztreonam
Unusual clinical course, Challenging differential diagnosis, Unusual or unexpected effect of treatment
Mustafa Nuaimi ABEF 1, Jonathan Cirillo BCE 2, Sara Usbosy BEF 1, Daniel Egan BDEF 3, Amanda Kovacich ABE 2, Mario Madruga AE 1, Stephen J. Carlan
BCEF 4*
DOI: 10.12659/AJCR.952266
Am J Case Rep 2026; 27:e952266
Figure 1 Clinical summary of the 137 days of treatment. The black boxes at the top of the horizontal line represent the antibiotic regimens. The boxes at the bottom represent culture results and procedures.