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Updated: Aug 17, 2026

A Controlled Mouse Model for Neonatal Polymicrobial Sepsis
Published on: January 27, 2019
Enterobacter sepsis in infants and children due to contaminated intravenous fluids
Abstract:
Sixty-three cases of nosocomial sepsis occurring from April through October 1981, in a 500-bed pediatric hospital, were traced to bacterial contamination of intravenous fluid produced by a single manufacturer. Two species of uncommon blood stream pathogens, Enterobacter cloacae and Enterobacter agglomerans contaminated the fluid. Infections with these organisms might have contributed to the death of four patients; two who were immunosuppressed, one who was asplenic and one premature infant. Epidemiologic and laboratory investigations identified the site of contamination to be within the screw-caps of the bottles containing the intravenous fluid. Contamination occurred during insertion of the intravenous fluid administration set into the bottle. The "epidemic" terminated when the hospital discontinued the use of infusion fluids from that manufacturer. We conclude that intravenous fluids should be examined during outbreaks of nosocomial bacteremia due to unusual pathogens.
Insights
Nosocomial sepsis outbreaks in a pediatric hospital were linked to contaminated intravenous fluids. Investigations revealed bacterial contamination in the intravenous fluid bottle screw-caps, leading to patient infections and four deaths.
Area of Science:
- Infectious Diseases
- Hospital Epidemiology
- Microbiology
Background:
- Nosocomial sepsis poses a significant threat in pediatric healthcare settings.
- Intravenous fluid administration is a common medical procedure with inherent risks.
- Identifying sources of hospital-acquired infections is crucial for patient safety.
Purpose of the Study:
- To investigate the cause of a nosocomial sepsis outbreak in a pediatric hospital.
- To identify the specific pathogen and source of contamination in intravenous fluids.
- To determine the clinical impact of the outbreak on patient outcomes.
Main Methods:
- Epidemiologic investigation of 63 nosocomial sepsis cases.
- Laboratory analysis to identify bacterial contaminants in intravenous fluids.
- Traceback investigation to pinpoint the contamination site within the fluid delivery system.
Main Results:
- Sixty-three cases of nosocomial sepsis were traced to a single manufacturer's intravenous fluid.
- Enterobacter cloacae and Enterobacter agglomerans were identified as the causative agents.
- Contamination was localized to the screw-caps of the intravenous fluid bottles.
- Four patient deaths, including vulnerable individuals, were potentially linked to these infections.
Conclusions:
- Contaminated intravenous fluids can cause significant nosocomial sepsis outbreaks.
- Screw-cap contamination of intravenous fluid bottles is a potential route for pathogen transmission.
- Vigilant examination of intravenous fluids is essential during unusual pathogen-related bacteremia outbreaks.
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