Volume 21, Number 7—July 2015
Research
Results from the National Legionella Outbreak Detection Program, the Netherlands, 2002–2012
Jeroen W. Den Boer
, Sjoerd M. Euser, Petra Brandsema, Linda Reijnen, and Jacob P. Bruin
, Sjoerd M. Euser, Petra Brandsema, Linda Reijnen, and Jacob P. Bruin
Table 2
Characteristics of and test results for patients with domestically acquired Legionnaires’ disease, the Netherlands, 2002–2012*
| Characteristic | Total, N = 1,991 | Community acquired, n = 1,872 | Nosocomial, n = 119 | p value† |
|---|---|---|---|---|
| Patient demographics | ||||
| Age, y (SD) | 60.2 (4.8–98.1) | 60.0 (4.8–98.1) | 68.9 (11.2–94.8) | <0.001 |
| Male sex, no. (%) | 1,429 (71.8) | 1,366 (73.1) | 63 (52.9) | <0.001 |
| Diagnostic tests, no. (%)‡ | 2,541 | 2,380 | 162 | NA |
| Culture‡ | 460 (23.1) | 416 (22.2) | 44 (37.0) | <0.001 |
| Urinary antigen‡ | 1,656 (83.2) | 1,567 (83.7) | 89 (74.8) | 0.012 |
| Seroconversion‡ | 109 (5.5) | 102 (5.4) | 7 (5.9) | 0.840 |
| Direct immunofluorescence‡ | 3 (0.2) | 3 (0.2) | 0 | NA |
| PCR‡ | 156 (7.8) | 145 (7.7) | 12 (10.1) | 0.346 |
| Single high titer‡ | 157 (7.9) | 147 (7.9) | 10 (8.4) | 0.829 |
*Study period was August 1, 2002–August 1, 2012. For 1,499 patients, >1 diagnostic test was available. NA, not possible to calculate.
†p value reflects the difference between patients with community-acquired Legionnaires’ disease and those with nosocomial Legionnaires’ disease.
‡Percentages reflect the proportion of patients for whom a diagnostic test result was available.
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