CEN Case Reports

, Volume 7, Issue 2, pp 234–236 | Cite as

Roultella ornithinolytica infection in infancy: a case of febrile urinary tract infection

  • Laura De PetrisEmail author
  • Ermanno Ruffini
Case Report


Raoultella ornithinolytica is a Gram-negative, non-motile, encapsulated, aerobic bacillus belonging to the Enterobacteriaceae family. R. ornithinolytica is a not very common, but emergent causal agent of human infection, and its expression of beta-lactamase provides resistance to commonly used antibiotics. The pathogenetic potential of R. ornithinolytica isolates in human disease has become increasingly important. Several cases of hospital-acquired infection, mostly associated with invasive procedures, or in patients with co-morbidity caused by R. ornithinolytica, have been previously reported in the adult population. In pediatric population, two cases in immunocompromised children, one case in an infant with visceral heterotaxy and one case of catheter-related bacteraemia are described. Here, we present the first case of febrile urinary tract infection due to R. ornithinolytica in an 8-month-old infant, recovered from a previous febrile UTI caused by E. coli and without co-morbidity. The empiric therapy with ceftriaxone, followed by cefpodoxime proxetil, resolved symptoms: the clinical condition of the infant improved rapidly and the treatment eradicated urine from the R. ornithinolytica infection. Since other pathogens rather than R. ornithinolytica are usually identified in children with urinary tract infections, including Escherichia coli, Proteus, Klebsiella and Pseudomonas, the identification of this microorganism in our patient’s urine was also unexpected.


Klebsiella Raoultella ornithinolytica Urinary tract infection Childhood 


Compliance with ethical standards

Conflict of interest

All the authors have declared no competing interest.

Ethical statement

This article does not contain any studies with human participants performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Japanese Society of Nephrology 2018

Authors and Affiliations

  1. 1.Department of Pediatrics and Neonatology“G. Mazzoni” HospitalAscoli PicenoItaly

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