Table 2.
Number of cases and incidence density* of symptomatic dengue recorded during the trial
| Countries | N | Subjects with at least one | Incidence density (95% confidence interval) per 100 person-years | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Acute febrile episode | Serologically probable dengue | Virologically confirmed dengue | Acute febrile episodes | Serologically probable dengue | Virologically confirmed dengue | Either Serologically probable or virologically confirmed | Both Serologically probable and virologically confirmed | ||
| All | 3000 | 235† | 50 | 18 | 17.7 (15.6; 20.1) | 3.6 (2.7; 4.8) | 1.3 (0.8; 2.1) | 4.1 (3.2; 5.4) | 0.8 (0.4; 1.4) |
| Brazil | 750 | 42 | 15 | 5 | 20.5 (15.2; 27.8) | 7.2 (4.3; 11.9) | 2.4 (1.0; 5.7) | 7.7 (4.7; 12.5) | 1.9 (0.7; 5.1) |
| Colombia | 1200 | 98 | 8 | 6 | 15.3 (12.5; 18.6) | 1.2 (0.6; 2.4) | 0.9 (0.4; 2.0) | 1.9 (1.1; 3.4) | 0.1 (0; 1.1) |
| Mexico | 750 | 44 | 8 | 1 | 17.8 (13.2; 23.9) | 3.1 (1.6; 6.3) | 0.4 (0.1; 2.8) | 3.1 (1.6; 6.3) | 0.4 (0.1; 2.8) |
| Puerto Rico | 300 | 51 | 19 | 6 | 22.0 (16.7; 29.0) | 7.7 (4.9; 12.0) | 2.3 (1.0; 5.2) | 8.1 (5.2; 12.5) | 1.0 (0.8; 4.7) |
*
Defined as the number of new cases arising from defined population in specified time period divided by the total at risk person-time of observation.
†
20 participants experienced two episodes, i.e., there was a total of 255 episodes.