Table 3.
Mycobactericidal effects of oxidizing high-level disinfectants and a quaternary ammonium compound against GTA-susceptible and GTA-resistant Mycobacterium isolates in suspension tests.
| Product tested |
Mmas CIP 108297 (GTAS) |
Mmas CRM-0270 (GTAS) |
Mmas CRM-0019 (GTAR) |
Mch ATCC 35752 (GTAS) |
Mch 9917 (GTAR) |
Mch Harefield (GTAR) |
Mch Epping (GTAR) |
M. bovis BCG (Pasteur) (GTAS) |
M. avium 104 (GTAS) |
M. terrae ATCC 15755 (GTAS) |
|---|---|---|---|---|---|---|---|---|---|---|
| Reliance™ DG 50°C | ||||||||||
| 0 min | 8.39 | 8.42 | 9.00 | 8.79 | 7.54 | 8.13 | 7.05 | 6.92 | 9.15 | 7.92 |
| 2 min | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6 min | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| S40™ 50°C | ||||||||||
| 0 min | 8.63 | 8.73 | 9.11 | 8.58 | 7.75 | 7.92 | 7.91 | 6.92 | 9.15 | 7.92 |
| 2 min | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6 min | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Resert™ XL 25°C | ||||||||||
| 0 min | 8.63 | 8.73 | 9.11 | 8.58 | 7.89 | 7.92 | 8.40 | nd | 9.15 | nd |
| 4 min | 0 | 3.12±0.18 | 3.51±0.22 | 0 | 0 | 4.17±0.11 | 0 | nd | 0 | nd |
| 8 min | 0 | 0 | 0 | 0 | 0 | 0 | 0 | nd | 0 | nd |
| CTAB 25°C | ||||||||||
| 0 min | 8.39 | 8.42 | 9.00 | 8.79 | 7.89 | 8.13 | 8.40 | nd | nd | nd |
| 60 min | 5.97±0.01 | 6.15±0.02 | nd | 8.33±0.02 | 7.61±0.03 | 7.97±0.04 | nd | nd | nd | nd |
| 1440 min | 6.27 | 5.55±0.12 | 7.16±0.05 | 5.05±0.90 | 6.46±0.16 | 7.43±0.01 | 6.35±0.03 | nd | nd | nd |
| Sterile Water 50°C | ||||||||||
| 0 min | nd | nd | 8.80 | nd | nd | 8.20 | nd | nd | nd | nd |
| 2 min | nd | nd | 8.27±0.11 | nd | nd | 7.96±0.02 | nd | nd | nd | nd |
| 6 min | nd | nd | 8.24±0.13 | nd | nd | 8.00±0.12 | nd | nd | nd | nd |
See Table 1 for legend. Control suspension tests using the GTA-susceptible isolate, M. massiliense CIP 108297, confirmed the neutralizing efficacy of the neutralizing broth with each disinfectant product. The detection limit of the suspension tests is 1 CFU/mL.