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Ability of quantitative PCR to predict the culture result
| 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 |
