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Ozone disinfection efficiency against airborne microorganisms in hospital environment: a case study Cover

Ozone disinfection efficiency against airborne microorganisms in hospital environment: a case study

Archives of Industrial Hygiene and Toxicology
Volume 73 (2022): Issue 4 (December 2022)
By: Kaća Piletić,  Dijana Tomić Linšak,  Bruno Kovač,  Silvestar Mežnarić,  Marin Repustić,  Martina Radmanović-Skrbić and  Ivana Gobin  
Open Access
|Dec 2022

Figures & Tables

Figure 1

Recovery room layout
Recovery room layout

Figure 2

Total bacterial and mould counts before (BT) and after (AT) 1-hour treatment with ozone at the concentration of 15.71 mg/m3. Different letters denote significant differences between groups (p<0.05; nonparametric Wilcoxon rank-sum test)
Total bacterial and mould counts before (BT) and after (AT) 1-hour treatment with ozone at the concentration of 15.71 mg/m3. Different letters denote significant differences between groups (p<0.05; nonparametric Wilcoxon rank-sum test)

Figure 3

Changes in bacterial counts and prevalence (%) by identified genera before (BT) and after (AT) ozone treatment (15.71 mg/m3) at the three sampling points. Different letters denote significant differences between groups (p<0.05; nonparametric Wilcoxon rank-sum test).
Changes in bacterial counts and prevalence (%) by identified genera before (BT) and after (AT) ozone treatment (15.71 mg/m3) at the three sampling points. Different letters denote significant differences between groups (p<0.05; nonparametric Wilcoxon rank-sum test).

Inhibition rates of total bacteria counts at the three sampling points

Sampling pointBefore treatment ozone
After treatment ozone
Inhibition (%)
rPrrPr
L1 – sink
413
2986
276
467
33
L2 – desk
367
992
151
189
58
L3 – window sill30959111814061

Inhibition rates by identified bacteria at the three sampling points_

Bacteria by identified generaSink
Desk
Window sill
Before ozone treatment
After ozone treatment
Inhibition (%)
Before ozone treatment
After ozone treatment
Inhibition (%)
Before ozone treatment
After ozone treatment
Inhibition (%)
rPrrPr rPrrPr rPrrPr
Micrococcus spp.
380
1189
260
419
31
345
791
141
174
59
275
464
105
122
61
Staphylococcus spp.
15
15
10
10
33
2
2
2
2
0
4
4
4
4
0
Bacillus spp.
13
13
4
4
69
10
10
3
3
70
20
20
0
0
100
Acinetobacter spp.5522601010555010109910
DOI: https://doi.org/10.2478/aiht-2022-73-3651 | Journal eISSN: 1848-6312 | Journal ISSN: 0004-1254
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Language: English, Croatian, Slovenian
Page range: 270 - 276
Submitted on: Apr 1, 2022
Accepted on: Dec 1, 2022
Published on: Dec 30, 2022
Published by: Institute for Medical Research and Occupational Health
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
aerosol,
airborne bacteria,
disinfection,
hospital acquired infections
Related subjects:
Medicine,
Basic medical science,
Basic medical science, other

© 2022 Kaća Piletić, Dijana Tomić Linšak, Bruno Kovač, Silvestar Mežnarić, Marin Repustić, Martina Radmanović-Skrbić, Ivana Gobin, published by Institute for Medical Research and Occupational Health
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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