Table 2. Demographic, clinical, and laboratory findings for soldiers hospitalized with acute lower respiratory infections, South Korea, April 2011–March 2012.
| Variable | Soldiers hospitalized for infection with |
p value* | |
|---|---|---|---|
| Adenovirus, n = 49 (79.0%) | Influenza A or B virus, n = 13 (21.0%) | ||
| Demographic characteristics | |||
| Age, mean y ± SD | 19.63 ± 1.16 | 20.15 ± 2.03 | 0.232 |
| Male sex |
49 (100.0) |
12 (92.3) |
0.210 |
| Military rank, no. (%) | 0.011 | ||
| New recruit | 32 (65.3) | 3 (23.1) | |
| Active-duty soldier |
17 (34.7)† |
10 (76.9) |
|
| Clinical characteristics, no. (%) | |||
| Fever >5 d | 27 (55.1) | 3 (23.1) | 0.061 |
| Cough | 47 (95.9) | 11 (84.6) | 0.191 |
| Rhinorrhea | 29 (59.2) | 7 (53.8) | 0.729 |
| Sputum | 32 (65.3) | 7 (53.8) | 0.447 |
| Sore throat | 30 (61.2) | 8 (61.5) | 0.984 |
| Dyspnea | 9 (18.4) | 2 (15.4) | 1.000 |
| Nausea/vomiting | 8 (16.3) | 3 (23.1) | 0.685 |
| Diarrhea | 13 (26.5) | 2 (15.4) | 0.493 |
| Chest pain |
5 (10.2) |
1 (7.7) |
1.000 |
| Laboratory findings ± SD | |||
| Leukocyte count (cell/μL) | 6,529 ± 2,643 | 8,110 ± 2,331 | 0.054 |
| Hemoglobin (g/dL) | 14.0 ± 0.9 | 13.5 ± 1.1 | 0.384 |
| Platelet count (103cell/μL) | 156 ± 29 | 201 ± 26 | <0.001 |
| C-reactive protein(mg/dL) |
12.0 ± 3.0 |
8.5 ± 2.3 |
<0.001 |
| Radiograph findings, no. (%) | |||
| Consolidation | 20 (40.8) | 2 (15.4) | 0.112 |
| Peribronchial infiltration | 26 (53.1) | 8 (61.5) | 0.585 |
| Effusion | 9 (18.4) | 1 (7.7) | 0.673 |
| Normal |
3 (6.1) |
3 (23.1) |
0.100 |
| Length of hospital stay, mean d ± SD |
17.1 ± 4.2 |
14.3 ± 4.1 |
0.036 |
| Required mechanical ventilation, no. (%) |
6 (12.2) |
0 |
0.328 |
| Died, no. (%) | 3 (6.1) | 0 | 1.000 |
*p<0.05 was considered significant. The statistical analyses used in this study are described in the online Technical Appendix (wwwnc.cdc.gov/EID/article/20/5/13-1692-Techapp1.pdf). †Among the 17 hospitalized active-duty soldiers with adenovirus infection, those ranked as privates were the most common (11/17 [64.7%]). All privates who were found to have adenovirus infection had been relocated to advanced training sites after graduating from the 6-week basic military training course, which suggests that adenovirus might have spread to secondary training sites through recruit redeployment.