Table 3 Results of microbiological analysis from the hospital's hot water samples one day and one month after hyperchlorination
Legionella pneumophila load, CFU/L | ||||
|---|---|---|---|---|
Sampling site | Sampling mode | Before treatment | One day after treatment | One month after treatment |
Boiler | Pre-flushing | 5 × 103 | 1.5 × 102 | 3.5 × 103 |
|  | Post-flushing | 4.5 × 103 | 2 × 102 | 5 × 103 |
Room closest to the boiler (sink) | Pre-flushing | 6.5 × 103 | 4 × 102 | 8.5 × 103 |
|  | Post- flushing | 7 × 103 | 2.5 × 103 | 6 × 103 |
Room farthest from the boiler (sink) | Pre-flushing | 4 × 103 | 2.5 × 101 | 2.5 × 103 |
|  | Post-flushing | 5 × 102 | 1.5 × 102 | 3.5 × 102 |
Patient's room from first admission (sink) | Pre-flushing | 4 × 103 | 2 × 102 | 2.5 × 103 |
|  | Post-flushing | 4.5 × 103 | 4 × 102 | 3 × 103 |