TABLE 1.
Clinical specimens for validating 23S‐5S assay
| Sample type | Cultures positive (+), n | PCR positive (+), n | PCR negative (−), n | Cultures (−)/PCR (+), n | mip sequence analysis of PCR+ but culture− samplesa | Total |
|---|---|---|---|---|---|---|
| Sputum | 9 | 18 | 40 | 9 | L. pneumophila (n = 5) L. longbeachae (n = 2) L. cincinnatiensis (n = 1) Novel Legionella spp. (n = 1) | 58 |
| Lung tissue | 24 | 31 | 28 | 7 | L. pneumophila (n = 6) Undetermined (n = 1)b | 59 |
| Bronchoalveolar lavage | 2 | 3 | 4 | 1 | L. micdadei (n = 1) | 7 |
| Bronchial swab | 2 | 2 | 0 | 0 | Not applicable | 2 |
| Nasopharyngeal swab | 2 | 2 | 0 | 0 | Not applicable | 2 |
| Blood | 0 | 8 | 0 | 8 | L. pneumophila (n = 2) Novel Legionella spp.(n = 6) | 8 |
| Liver | 0 | 0 | 1 | 0 | Not applicablec | 1 |
| Trans‐tracheal aspirate | 0 | 0 | 1 | 0 | Not applicablec | 1 |
| Spleen | 0 | 0 | 1 | 0 | Not applicablec | 1 |
| Pleural fluid | 0 | 1 | 1 | 1 | L. pneumophila (n = 1)d | 2 |
| Formalin‐fixed and paraffin embedded tissue (FFPE) | 0 | 1 | 7 | 1 | L. pneumophila (n = 1)d | 8 |
| Total number of specimens | 39e | 66 | 83 | 27 | 27 | 149 |
| Percentage of specimens | 26% | 44% | 56% | 18% | 18% | 100.0% |
mip sequence analysis for all culture−/PCR+ samples unless otherwise indicated.
No sample left for sequencing.
Not applicable for sequence analysis.
Amplicon sequence analysis only.
Positive for Legionella pneumophila.