Mycobactericidal activity of chlorine dioxide wipes in a modified prEN 14563 test

Area of Science:

• Microbiology
• Infectious Diseases
• Medical Device Disinfection

Background:

• Semi-critical medical devices require effective disinfection to prevent healthcare-associated infections.
• Mycobacterium avium poses a challenge for disinfection due to its inherent resistance.
• Chlorine dioxide is a potent disinfectant agent used in healthcare settings.

Purpose of the Study:

• To evaluate the mycobactericidal efficacy of Tristel Sporicidal Wipes against Mycobacterium avium.
• To determine the required contact time for disinfection under clean conditions.

Main Methods:

• A modified European Standard prEN 14563 carrier test was employed.
• Testing was conducted under clean conditions using Mycobacterium avium as the challenge organism.
• The chlorine dioxide concentration in the activated wipes was standardized at 200ppm.

Main Results:

• The chlorine dioxide wipes demonstrated mycobactericidal activity within 30 seconds with mechanical action.
• A contact time of 60 seconds was sufficient for mycobactericidal activity without mechanical action.
• Efficacy was confirmed under clean conditions against Mycobacterium avium.

Conclusions:

• Tristel Sporicidal Wipes exhibit rapid and effective mycobactericidal activity.
• The product is suitable for disinfecting non-lumened semi-critical medical devices.
• Short contact times suggest efficient disinfection protocols are achievable.