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Diagnostic Methods.
| Methods | Number of positive diagnostic studies | Number of episodes studied |
|---|---|---|
| Urinary antigen test | ||
| Legionella spp., positive | 2 | 291 |
| Streptococcus pneumoniae, positive | 3 | 291 |
| Rapid influenza diagnostic test, tested | 21 | 292 |
| Paired sera, tested | 2 | 123 |
| Culture | ||
| Sputum | 1 | 62 |
| Bronchial toilet | 1 | 8 |
| Multiplex PCR | ||
| Nasopharyngeal swabs, sputum | 91 | 298 |
| BALF | 2 | 2 |
PCR: polymerase chain reaction, BALF: bronchoalveolar lavage fluid
