Table 1.
Characteristics of the 208 dengue cases that were exposed to Ae. aegypti on 407 independent occasions
| Characteristic | DENV-1 (n = 78) | DENV-2 (n = 83) | DENV-3 (n = 25) | DENV-4 (n = 22) | All patients (n = 208) |
| Age, y | 21 (19–27) | 23 (20–30) | 24 (19–29) | 23 (20–31) | 23 (20–28) |
| Sex | |||||
| Female | 48 (62) | 48 (58) | 13 (52) | 11 (50) | 120 (58) |
| Male | 30 (38) | 35 (42) | 12 (48) | 11 (50) | 88 (42) |
| Day of illness at enrollment | |||||
| 1 | 0 | 0 | 1 (4) | 0 | 1 (<1) |
| 2 | 18 (23) | 21 (25) | 7 (28) | 3 (14) | 49 (24) |
| 3 | 48 (62) | 53 (64) | 8 (32) | 10 (45) | 119 (57) |
| 4 | 12 (15) | 9 (11) | 9 (36) | 9 (41) | 39 (19) |
| Serology | |||||
| Primary | 25 (32) | 11 (13) | 4 (16) | 2 (9) | 42 (20) |
| Secondary | 42 (54) | 56 (67) | 13 (52) | 19 (86) | 130 (63) |
| Indeterminate | 11 (14) | 16 (19) | 8 (32) | 1 (5) | 36 (17) |
| Enrolment viremia, log10-copies/mL | 8.35 (7.44–9.02) | 7.77 (6.85–8.61) | 8.55 (7.57–9.21) | 6.58 (6.17–7.84) | 7.99 (6.93–8.78) |
| Clinical classification | |||||
| Dengue | 63 (80) | 58 (70) | 18 (72) | 15 (68) | 154 (74) |
| Dengue with warning signs | 15 (20) | 24 (29) | 7 (28) | 7 (32) | 53 (25) |
| Severe dengue | 0 | 1 (1) | 0 | 0 | 1 (<1) |
| Transferred to ICU | 1 (1)(a) | 2 (2)(a),(b) | 0 | 0 | 3 (1) |
Clinical reasons for transfer to intensive care unit (ICU): (a) narrow pulse pressure; (b) hypovolemic shock. Values are n (%) or median (interquartile range).