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    Central line-associated bloodstream infection outbreak related to Ralstonia pickettii-contaminated saline in a pediatric hematopoietic stem cell transplant center
    (Hacettepe Üniversitesi Çocuk Sağlığı Enstitüsü Müdürlüğü, 17.10.2024) Çelen, Safiye Suna; Zhumatayev, Suleimen; Yalçın, Koray; Kara, Emine Manolya; Sutcu, Murat; Karasu, Gulsun; Yesilipek, M.Akif
    Background. Ralstonia pickettii is an aerobic Gram-negative non-fermentative bacillus. It is an opportunistic pathogen that has recently prompted nosocomial outbreaks. Although it has low virulence, it can cause a wide range of invasive diseases in immunosuppressive patients. The characteristics of R. pickettii-related central line-associated bloodstream infection (CLABSI) outbreak in pediatric hematopoietic stem cell transplant (HSCT) recipients are presented in this study. Materials and Methods. This was a single-center, retrospective analysis conducted at Bahcesehir University Goztepe Medicalpark Hospital . The clinical and laboratory characteristics of twelve children with Ralstonia-related CLABSIs were analyzed. Results. Of the twelve patients with R. pickettii growth, seven were female. The median age was 12.1 (2-17) years. Autologous HSCT was performed in two of the patients and allogeneic HSCT was performed in ten patients for both malignant and non-malignant diseases. In the conditioning regimens, all patients were given myeloablative therapy. Clinical sepsis was the most common presentation. As a result of the investigations, R. pickettii growth was observed in saline solutions. All cases were successfully treated with the appropriate antibiotic regimen and the bacteria was not found in repeat cultures. Catheter removal was required in two patients. Mortality was not observed in any patient as the outcome of the infection episode. Conclusion. The detection and control of the infectious source are critical in pediatric HSCT patients with severe immunosuppression, as medical equipment-related outbreaks can be life-threatening.