Serratia marcescens and the urologist

Area of Science:

• Microbiology
• Infectious Diseases
• Hospital Epidemiology

Background:

• Serratia marcescens is increasingly recognized as a pathogen, particularly in healthcare settings.
• Historically underestimated, its role in nosocomial infections is now a significant concern.
• Understanding transmission and risk factors is crucial for infection control.

Purpose of the Study:

• To report on a significant outbreak of Serratia marcescens infection across two institutions.
• To identify predisposing conditions and epidemiological factors associated with Serratia infections.
• To assess the environmental presence of Serratia marcescens in healthcare facilities.

Main Methods:

• Conducted an epidemiological survey during a Serratia infection outbreak.
• Analyzed 253 cultures and data from 115 affected patients.
• Investigated environmental samples for the presence of Serratia marcescens.

Main Results:

• Identified indwelling urethral catheters, antibiotic therapy, and surgical procedures as the primary risk factors.
• Confirmed all investigated infections were acquired within the hospital environment.
• Demonstrated the environmental persistence of Serratia marcescens, independent of active patient infections.

Conclusions:

• Serratia marcescens poses a substantial threat in nosocomial settings.
• Aggressive infection control measures targeting high-risk procedures and environments are necessary.
• Environmental surveillance and hygiene protocols are vital to mitigate Serratia outbreaks.