Related Experiment Video
Updated: Jun 26, 2026

A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
An outbreak of Serratia marcescens septicemia in neonates
Ekrem Guler1, Mehmet Davutoglu, Hasan Ucmak
1Department of Pediatric, Kahramanmaras Sutcu Imam University, Kahramanmaras 46050, Turkey. ekremguler@hotmail.com
Abstract:
Serratia marcescens is a well recognized nosocomial pathogen. We report an outbreak with this organism in 8 neonates in a neonatal intensive care unit (NICU). Seven cases were treated successfully with meropenem after the failure of imipenem treatment. Although they have similar anti-microbial effects, meropenem can effectively treat the S. marcescens sepsis resistant to imipenem.
Insights
Serratia marcescens caused an outbreak in 8 neonates. Meropenem effectively treated sepsis resistant to imipenem, highlighting its efficacy in neonatal intensive care unit (NICU) settings.
Area of Science:
- Infectious Diseases
- Neonatal Medicine
- Microbiology
Background:
- Serratia marcescens is a known cause of hospital-acquired infections.
- Neonatal intensive care units (NICUs) are susceptible to outbreaks of nosocomial pathogens.
- Antibiotic resistance in nosocomial pathogens poses a significant challenge in neonatal care.
Purpose of the Study:
- To report an outbreak of Serratia marcescens in a NICU.
- To evaluate the treatment outcomes for neonates infected with Serratia marcescens.
- To compare the efficacy of meropenem versus imipenem in treating Serratia marcescens sepsis.
Main Methods:
- Retrospective analysis of 8 neonates with Serratia marcescens infection in a NICU.
- Review of treatment regimens, focusing on imipenem and meropenem.
- Clinical outcome assessment including treatment success and failure.
Main Results:
- Seven out of eight neonates with Serratia marcescens sepsis were successfully treated with meropenem.
- Imipenem treatment failed in cases subsequently treated successfully with meropenem.
- Meropenem demonstrated effectiveness against Serratia marcescens strains resistant to imipenem.
Conclusions:
- Meropenem is an effective treatment option for Serratia marcescens sepsis in neonates, even when imipenem has failed.
- This study underscores the importance of appropriate antibiotic selection in managing nosocomial infections in the NICU.
- Further investigation into meropenem's role in treating resistant bacterial infections in neonates is warranted.
Related Concept Videos
Bacterial Meningitis I: Introduction
Development of the Oral Microbiota
Bacterial Meningitis
Rocky Mountain Spotted Fever
Bacterial Meningitis II: Pathophysiology

