Risk of infection from needle reuse at a phlebotomy center

Area of Science:

• Infectious Diseases
• Public Health
• Epidemiology

Background:

• Needle reuse in healthcare settings presents a potential risk for transmitting bloodborne pathogens.
• A phlebotomy center incident potentially exposed 3810 patients to HIV, HBV, and HCV due to needle reuse.

Purpose of the Study:

• To determine the infection risk per blood draw associated with needle reuse.
• To assess the actual prevalence of HIV, HBV, and HCV infections in potentially exposed patients.

Main Methods:

• Utilized a mathematical model to estimate infection risk per blood draw.
• Supplemented modeling with serological testing of 1699 patients for HIV, HBV, and HCV.

Main Results:

• The highest estimated risk of transmission was for HBV, ranging from 1.1 x 10(-6) (best case) to 1.2 x 10(-3) (worst case).
• Prevalence rates detected were 0.12% for HIV, 0.41% for HBV, and 0.88% for HCV.
• These prevalence rates were lower than those estimated by the National Health and Nutrition Examination Survey III.

Conclusions:

• The overall risk of infection from needle reuse at this phlebotomy center was determined to be very low.
• It is unlikely that significant numbers of transmissions occurred due to the incident.