Table 2.
Log10-reduction of cell counts by five surface disinfectant cleaners against emerging multidrug-resistant enterobacteriaceae and corresponding ATCC strains
| Species | Isolate/strain | Product (concentration) | Contact time | Log10-reduction |
|---|---|---|---|---|
|
Serratia marcescens |
ATCC 14756 |
AAS (undiluted) |
30 and 60 s |
> 5.47 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
0MRGN |
AAS (undiluted) |
30 and 60 s |
> 5.37 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
3MRGN |
AAS (undiluted) |
30 and 60 s |
> 5.17 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
4MRGN OXA-48 |
AAS (undiluted) |
30 and 60 s |
> 5.14 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
4MRGN KPC-2 |
AAS (undiluted) |
30 and 60 s |
> 5.09 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
|
Klebsiella pneumoniae |
ATCC 10031 |
AAS (undiluted) |
30 and 60 s |
>5.34 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
0MRGN |
AAS (undiluted) |
30 and 60 s |
>5.08 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
3MRGN |
AAS (undiluted) |
30 and 60 s |
> 5.09 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
4MRGN OXA-48 |
AAS (undiluted) |
30 and 60 s |
>5.38 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
4MRGN KPC-2 |
AAS (undiluted) |
30 and 60 s |
>5.34 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
|
Klebsiella oxytoca |
ATCC 700324 |
AAS (undiluted) |
30 and 60 s |
>5.14 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
0MRGN |
AAS (undiluted) |
30 and 60 s |
>5.36 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
3MRGN |
AAS (undiluted) |
30 and 60 s |
>5.31 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
4MRGN OXA-48 |
AAS (undiluted) |
30 and 60 s |
>5.31 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| |
|
SASA2 (0.5%) |
||
| |
4MRGN KPC-2 |
AAS (undiluted) |
30 and 60 s |
>5.11 |
| |
|
SAS (0.5%) |
30 and 60 min |
|
| |
|
OR (0.4%) |
||
| |
|
SASA1 (0.25%) |
||
| SASA2 (0.5%) |
Experiments were carried out in quadruplicate under dirty conditions; lowest log10-reduction values are shown.