Table 2.
Comparison of log10 colony-forming unit (CFU) or plaque-forming unit (PFU) reductions achieved on steel disk carriers by 90 seconds or 180 seconds of exposure to UV-C from a room decontamination device.
| Time (seconds) | Organism | Susceptible to UV-C | Log10 CFU reduction |
|---|---|---|---|
| 90 | Acinetobacter baumanii |  |
4.32 |
| 90 | Vancomycin-resistant Enterococcus faecium | 3.75 | |
| 90 | Klebsiella pneumoniae | 3.69 | |
| 90 | MRSA | 3.28 | |
| 90 | NDM1 Escherichia coli | 3.27 | |
| 90 | PHI X174 (SS-DNA non-enveloped) | 2.49 | |
| 90 | PHI 6 (DS-RNA Enveloped) | 0.91 | |
| 90 | MS2 (SS-RNA non-enveloped) | 0.84 | |
| 180 | Candida auris | 1.13 | |
| 180 | Candida albicans | 1.13 | |
| 180 | Clostridioides difficile spores | 1.05 | |
| 180 | Bacillus subtillus spores | 0.72 | |
| Resistant to UV-C |