Table 1.

Efficacy of Laundry Products in Inactivating Mpox Virus on Fabric

TreatmentPolyesterCotton
Clean ConditionDirty ConditionClean ConditionDirty Condition
Concentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRV
Virus titer4.5 ± 0.14.6 ± 0.24.0 ± 0.04.2 ± 0.1
Water at 22°C3.3 ± 0.11.22.8 ± 0.21.92.6 ± 0.11.32.7 ± 0.01.5
Water at 70°C≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Sodium hypochlorite 0.05%≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Liquid disinfectant≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 1≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 2≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
TreatmentPolyesterCotton
Clean ConditionDirty ConditionClean ConditionDirty Condition
Concentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRV
Virus titer4.5 ± 0.14.6 ± 0.24.0 ± 0.04.2 ± 0.1
Water at 22°C3.3 ± 0.11.22.8 ± 0.21.92.6 ± 0.11.32.7 ± 0.01.5
Water at 70°C≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Sodium hypochlorite 0.05%≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Liquid disinfectant≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 1≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 2≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2

Data shows mean values (± SD) of 3 independent replicates. The limit of detection of the assay was 10 PFU/mL (1 log10 PFU/mL).

Abbreviations: LRV, log reduction value; PFU, plaque-forming unit.

The data presents the average log10 virus concentration and LRV of mpox virus in fabric (100% cotton and 100% polyester) with and without the washing intervention. Two conditions were assessed for each fabric: dirty (bovine serum albumin-containing media) and clean (phosphate-buffered saline-containing media). The evaluated conditions included 2 powder detergents (Ariel and OMO), a liquid sanitizer (Dettol), a 0.05% sodium hypochlorite solution, and water at room temperature and at 70°C.

Table 1.

Efficacy of Laundry Products in Inactivating Mpox Virus on Fabric

TreatmentPolyesterCotton
Clean ConditionDirty ConditionClean ConditionDirty Condition
Concentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRV
Virus titer4.5 ± 0.14.6 ± 0.24.0 ± 0.04.2 ± 0.1
Water at 22°C3.3 ± 0.11.22.8 ± 0.21.92.6 ± 0.11.32.7 ± 0.01.5
Water at 70°C≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Sodium hypochlorite 0.05%≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Liquid disinfectant≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 1≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 2≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
TreatmentPolyesterCotton
Clean ConditionDirty ConditionClean ConditionDirty Condition
Concentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRVConcentration, log10 PFULRV
Virus titer4.5 ± 0.14.6 ± 0.24.0 ± 0.04.2 ± 0.1
Water at 22°C3.3 ± 0.11.22.8 ± 0.21.92.6 ± 0.11.32.7 ± 0.01.5
Water at 70°C≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Sodium hypochlorite 0.05%≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Liquid disinfectant≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 1≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2
Powder detergent 2≤1.0 ± 0.0≥3.5≤1.0 ± 0.0≥3.6≤1.0 ± 0.0≥3.0≤1.0 ± 0.0≥3.2

Data shows mean values (± SD) of 3 independent replicates. The limit of detection of the assay was 10 PFU/mL (1 log10 PFU/mL).

Abbreviations: LRV, log reduction value; PFU, plaque-forming unit.

The data presents the average log10 virus concentration and LRV of mpox virus in fabric (100% cotton and 100% polyester) with and without the washing intervention. Two conditions were assessed for each fabric: dirty (bovine serum albumin-containing media) and clean (phosphate-buffered saline-containing media). The evaluated conditions included 2 powder detergents (Ariel and OMO), a liquid sanitizer (Dettol), a 0.05% sodium hypochlorite solution, and water at room temperature and at 70°C.

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