Outbreak of bloodstream infections associated with multiuse dialyzers containing O-rings

Area of Science:

• Infectious Disease Epidemiology
• Public Health Surveillance
• Healthcare-Associated Infections

Background:

• Bacterial infections pose a significant risk to patients undergoing hemodialysis.
• Dialysis centers require stringent infection control protocols to prevent outbreaks.
• Previous outbreaks have been linked to lapses in reprocessing reusable medical devices.

Purpose of the Study:

• To investigate an outbreak of bacterial infections among hemodialysis patients.
• To identify the source and transmission route of the bacterial infections.
• To inform public health interventions and improve dialysis center safety.

Main Methods:

• Conducted an outbreak investigation following reports of bacterial infections.
• Interviewed patients and staff, and reviewed medical records.
• Examined dialysis equipment and disinfection procedures for potential breaches.

Main Results:

• Identified 3 cases of bacterial infection in patients treated at the same dialysis center in 2011.
• Hypothesized that improper disinfection of reusable dialyzers was the likely source of transmission.
• Epidemiological data suggested a link between patient treatment and the suspected equipment issue.

Conclusions:

• Improperly disinfected reusable dialyzers can lead to bacterial outbreaks in hemodialysis settings.
• Reinforces the critical importance of adhering to disinfection protocols in healthcare facilities.
• Highlights the need for ongoing surveillance and prompt investigation of potential infection clusters.