Citrobacter Sedlakii as a Rare Cause of Brain Abscess in a Late-Preterm Omani Infant: Case report and literature review.

Brain abscess in neonates is rare but remains a severe, life-threatening complication of meningitis with significant morbidity and mortality. While Citrobacter koseri and Citrobacter freundii are commonly implicated in brain-abscess formation, Citrobacter sedlakii is an uncommon causative pathogen. To date, only two cases of neonatal brain abscess caused by C. sedlakii have been reported in the literature. Early diagnosis, timely surgical intervention and prompt antibiotic therapy are critical to achieving a favourable outcome. A third case of a C. sedlakii brain abscess in a preterm infant, presenting in 2024 to a tertiary-care hospital in Oman, is reported together with a brief review of the literature.