Case Report: Catheter-associated multidrug-resistant Leclercia adecarboxylata bloodstream infection in a colon tumor patient.

Leclercia adecarboxylata is a motile, Gram-negative bacillus in the Enterobacteriaceae family and is ubiquitous in nature. In our study, we report a case of catheter-associated bloodstream infection caused by multidrug-resistant L. adecarboxylata in a colon tumor patient. The clinical symptom of the patient was high fever with chills. Initially, the patient was treated empirically with cefoperazone-sulbactam. Although cefoperazone-sulbactam was used for 4 days, the patient still had a fever. Then the bacterial cultures of the peripheral blood and catheter were positive for L. adecarboxylata. The treatment regimen was changed to meropenem. After the treatment, the patient's clinical symptoms improved and the patient was discharged. Although L. adecarboxylata is regarded as a highly sensitive pathogen, it was a multidrug-resistant bacterium in our study. We recommend that the treatment of L. adecarboxylata should be based on antimicrobial sensitivity tests.