Lecture critique – L’eau ozonée, une alternative à la désinfection des mains par un produit hydro-alcoolique ?

Auteurs: Joseph Hajjar 1, Olivia Keita-Perse 2, Philippe Vanhems 3

Affiliations :

  • 1 - Praticien honoraire des hôpitaux – 23 rue des Alliés – 64000 Pau – France
  • 2 - Praticien hospitalier – Centre hospitalier Princesse Grace – Monaco
  • 3 - Praticien hospitalier – Hospices civils de Lyon – Lyon – France

Auteur principal : Dr - Joseph Hajjar - Praticien honoraire des hôpitaux – 23 rue des Alliés – 64000 Pau – France - Email : jhajjar@laposte.net


Titre de l'article sujet de la Lecture critique Breidablik HJa, Lysebo DEb, Johannessen Lc, Skare Ad, Andersen JRe, Kleiven OTe. Ozonized water as an alternative to alcohol-based hand disinfection. J Hosp Infect 2019;102:419-424.
a- Center of Health Research, Førde Hospital Trust, Førde, Norway. b- Haukeland University Hospital, Bergen, Norway. c- Thelma Indoor Air & Working Environment AS, Microbiology Department, Trondheim, Norway. d- Førde Hospital Trust, Department for Infection Control, Førde, Norway. e- Faculty of Western Norway, University of Applied Sciences, Førde, Norway.

Background. Hand hygiene plays a vital role in the prevention of transmission of microorganisms. Ozone (O3) is a highly reactive gas with a broad spectrum of antimicrobial effects on bacteria, viruses, and protozoa. It can easily be produced locally in small generators, and dissolved in tap water, and quickly transmits into ordinary O2 in the surrounding air. Aim. To compare ozonized tap water and alcohol rub in decontamination of bacterially contaminated hands. Methods. A cross-over study among 30 nursing students. Hands were artificially contaminated with Escherichia coli (ATCC 25922), then sanitized with ozonized tap water (0.8 or 4 ppm) or 3 ml standard alcohol-based rub (Antibac 85%). The transient microbes from fingers were cultivated and colony-forming units (cfu)/ml were counted. The test procedure was modified from European Standard EN 1500:2013. Findings. All contaminated hands before disinfection showed cfu >30,000/ml. The mean (SD) bacterial counts in (cfu/ml) on both hands combined were 1017 (1391) after using ozonized water, and 2337 (4664) after alcohol hand disinfection. The median (range) values were 500 (0-6700) and 250 (0-16,000) respectively (non-significant difference). Twenty per cent of participants reported adverse skin effects (burning/dryness) from alcohol disinfection compared with no adverse sensations with ozone. Conclusion. Ozonized tap water is an effective decontaminant of E. coli, and it could be an alternative to traditional alcohol-fluid hand disinfectants both in healthcare institutions and public places. Ozonized water may be especially valuable for individuals with skin problems.


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