Table 2.
Cooling towers | Hot and cold water systems | |||
---|---|---|---|---|
Legionella spp. (%) | Legionella pneumophila (%) | Legionella spp. (%) | Leg. pneumophila (%) | |
Positive predictive value | 33 | 54 | 56 | 60 |
Negative predictive value | 100 | 97 | 70 | 89 |
Sensitivity | 100 | 95 | 99 | 96 |
Specificity | 7 | 69 | 3 | 32 |