Investigation of a Multidrug-Resistant Raoultella Planticola (Formerly Klebsiella Planticola) Isolate from a Urine Culture: A Case Report

We report a case of Urinary Tract Infection (UTI) caused by a multidrug-resistant (MDR) Raoultella planticola isolate recovered from a 65-year-old male with multiple comorbidities and recurrent UTIs. Laboratory identification was performed using RAPID REMEL® systems and conventional culture on blood Columbia agar, MacConkey agar and Sabouraud Dextrose agar. Antimicrobial susceptibility testing followed the Kirby-Bauer disk diffusion method and interpretation according to EUCAST 2025 criteria. The isolate exhibited resistance to multiple antimicrobial classes, necessitating referral for inpatient intravenous therapy. We discuss the clinical significance, possible environmental exposure related to gardening activities, and the importance of early recognition and appropriate antimicrobial stewardship for emerging Raoultella infections.