Inactivation of Methicillin-Resistant Staphylococcus aureus (MRSA) and Vancomycin-Resistant Enterococcus faecium (VRE) on Various Environmental Surfaces by Mist Application of a Stabilized Chlorine Dioxide and Quaternary Ammonium Compound-Based Disinfectant

Figures & data

Figure 1 Disinfection chamber. The dotted arrow represents the direction of disinfectant (or control) flow, following introduction through the A port. Additional airflow was introduced through B ports to provide turbulent mixing of the disinfectant plume. C ports were filtered vents.

TABLE I Log₁₀ Reduction of MRSA on Surfaces by Mist Application of Cryocide20 Disinfectant

Surface	Glass	Steel	Rug	Cotton	Tile
Median	1.9	3.2	3.1	2.7	>4.0
Max	3.7	>4.0	>4.0	>4.0	>4.0
Min	0.4	2.0	2.4	0.5	2.6
Number of trials	4	4	6	8	3

TABLE II Log₁₀ Reduction of VRE on Surfaces by Mist Application of Cryocide20 Disinfectant

Surface	Glass	Steel	Rug	Cotton	Tile
Median	1.9	2.4	2.0	0.6	2.6
Max	2.9	>4.0	2.2	>4.0	>4.0
Min	0.9	0.5	1.6	0.4	2.1
Number of trials	6	4	6	6	3

TABLE III Log₁₀ Reduction of MRSA and VRE by Liquid Application of Cryocide20 Disinfectant

	1:1 Strength		1:5 Strength		1:10 Strength
Disinfectant Ratio (v/v)	MRSA	VRE	MRSA	VRE	MRSA	VRE
Median	3.1	3.8	3.0	>4.0	>4.0	>4.0
Max	>4.0	>4.0	>4.0	4.1	>4.0	>4.0
Min	2.5	2.4	2.5	3.3	2.6	3.8
Number of trials	6	9	6	9	6	9