Table 1.
Demographic, clinical, and laboratory characteristics in travelers diagnosed with dengue infection*
| Characteristic | All travelers (n = 35) | Primary infection (n = 25) | Secondary infection (n = 10) | P |
|---|---|---|---|---|
| Epidemiologic data | ||||
| Mean ± SD age (years) | 30.8 ± 10.6 | 31.2 ± 11.4 | 30.8 ± 9.3 | 0.92 |
| M/F ratio | 1.5 | 2.1 | 1.0 | 0.44 |
| Travel destination, % | ||||
| Southeast Asia | 68.6 | 76.0 | 50.0 | 0.22 |
| India | 22.9 | 20.0 | 30.0 | 0.66 |
| Latin America | 9.6 | 4 | 20.0 | 0.08 |
| Mean ± SD time from return to admission (days) | 3.5 ± 2.1 | 3.3 ± 1.9 | 4.0 ± 2.6 | 0.42 |
| Clinical and laboratory data, mean ± SD | ||||
| Fever duration on admission (days) | 4.5 ± 2.0 | 4.5 ± 2.2 | 4.5 ± 1.9 | 0.97 |
| Fever duration on day of sonography (days) | 6.9 ± 0.9 | 6.9 ± 1.0 | 7.0 ± 0.5 | 0.71 |
| Systolic BP (mm of Hg) | 107.8 ± 14.7 | 107.5 ± 15.0 | 108.5 ± 15.0 | 0.87 |
| Diastolic BP (mm of Hg) | 65.0 ± 7.8 | 64.6 ± 7.5 | 65.7 ± 8.9 | 0.74 |
| Leukocyte count (×106/L)† | 3,001 ± 1,024 | 2,986 ± 1,145 | 2,917 ± 664 | 0.76 |
| Neutrophil count (×106/L)† | 1,287 ± 433 | 1,382 ± 498 | 1,107 ± 252 | 0.11 |
| Platelet count (×106/L)† | 93 ± 46 | 93 ± 41 | 98 ± 55 | 0.86 |
| Hematocrit on admission (%) | 43.9 ± 3.3 | 41.8 ± 3.6 | 41.7 ± 2.8 | 0.89 |
| Hematocrit after 1 day (%) | 40.9 ± 2.9 | 41.1 ± 3.1 | 40.7 ± 2.7 | 0.76 |
| Total serum protein (g/dL)† | 6.8 ± 0.6 | 6.8 ± 0.5 | 6.8 ± 0.5 | 0.85 |
| Sonographic data | ||||
| Sonographic evidence of capillary leak, n/N (%) | 12/35 (34.3) | 8/25 (32) | 4/10 (40) | 0.69 |
*
BP = blood pressure.
†
Minimum laboratory values.