Table 1 Comparison of culture and qPCR for quantification of Legionella.
| Number of positive samples | Concentrations | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Culture | qPCR | Culture | qPCR | ||||||
| Sampling | Sampling site | Type of sample | No of samples | Legionella spp | Legionella spp | Legionella pneumophila | Legionella spp 104 CFU/L | Legionella spp104 GU/L | Legionella pneumophila 104 GU/L |
| Circulation water | B | 1 | 1 | 1 | 1 | 5.5 | 3.4 | 3.6 | |
| Before the first intervention | Empty apartment | A | 0 | ||||||
| Shower hose | A | 1 | 1 | 1 | 1 | 60 | 26 | 14 | |
| Circulation water | B | 10 | 10 | 10 | 10 |
0.005 - 1.2 [0.08] |
0.77 - 2.9 [1.5] |
0.6 - 2.6 [1.1] | |
| After the first intervention | Empty apartment | A | 4 | 4 | 4 | 4 |
1.9 - 33 [19] |
2.9 - 24 [8.9] |
4.9 - 19 [11] |
| Shower hose | A | 5 | 5 | 5 | 5 |
0.8 - 160 [27] |
3.5 - 96 [28] |
1.1 - 43 [17] | |
| Circulation water | B | 16 | 0 | 16 | 13 | BD |
0.4-1.9 [0.62] |
BD - 2.0 [0.27] | |
| After the second intervention | Empty apartment | A | 2 | 1 | 2 | 2 | BD - 0.001 |
3.2 - 55 [29] |
3.7 - 68 [36] |
| Shower hose | A | 8 | 0 | 8 | 8 | BD |
0.17 - 2.3 [0.95] |
0.033 - 3.2 [1.3] | |