Evaluation of a bipolar ionization device in inactivation of antimicrobial-resistant bacteria, yeast, Aspergillus spp. and human coronavirus - 21/07/22
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Summary |
Background |
The efficacy of bipolar ionization in the healthcare setting has yet to be proven. A major limitation of studies sponsored by industry has been the assessment of efficiency within test chambers in which ozone levels are not adequately controlled.
Aim |
To assess the effectiveness of bipolar ionization against antimicrobial-resistant bacteria, fungi and human coronavirus within a controlled test chamber designed to mitigate the effect of ozone.
Methods |
Bacteria- and fungi-inoculated gauze pads, and human coronavirus 229E-inoculated stainless steel plates were placed within the vicinity of the AIO-2 bipolar ionizer and left at room temperature (2 h for coronavirus and 4 h for bacteria and fungi).
Findings |
Four hours of exposure to bipolar ionization showed a 1.23–4.76 log reduction, corresponding to a 94.2–>99.9% colony-forming units/gauze reduction, in Clostridioides difficile, Klebsiella pneumoniae carbapenemase-producing K. pneumoniae, meticillin-resistant Staphylococcus aureus and multi-drug-resistant S. aureus. A 1.2 log 50% tissue culture infectious dose reduction in human coronavirus was observed after 2 h.
Conclusion |
The assessment of bipolar ionization systems merits further investigation as an infection control measure.
Le texte complet de cet article est disponible en PDF.Keywords : Antimicrobial activity, Infection control, Bipolar ionization, Environmental decontamination, Ozone control
Plan
Vol 126
P. 16-20 - août 2022 Retour au numéro
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