Table 1.
Descriptions of Population Characteristics in the Two Studies Grouped by Whether Classified by PRNT and Acute IgG and IgM as Having Experience One, Two, or Unknown (Indeterminate) Number of Past Infections
| PRNT Classification | One Past Infection (Primary) | Two or More Past Infections (Secondary) | Indeterminate Infections |
|---|---|---|---|
| (n = 55 Subjects) | (N = 86 Subjects) | (N = 35 Subjects) | |
| Age, median (IQR) | 13 (11–17) | 14 (11–19) | 14 (12–20) |
| Gender, female (%) | 13 (24%) | 41 (47%) | 12 (17%) |
| Day of follow-up 1, median (IQR) | 19 (16–31) | 18 (16–30) | 17 (16–31) |
| Day of follow-up 2, median (IQR) | 217 (202–244) | 200 (183–219) | 215 (201–240) |
| DENV1 PCR-positive in acute infection | 28 | 27 | 6 |
| DENV2 PCR-positive in acute infection | 17 | 26 | 15 |
| DENV3 PCR-positive in acute infection | 7 | 12 | 5 |
| DENV4 PCR-positive in acute infection | 3 | 21 | 9 |
Abbreviations: DENV, dengue virus; Ig, immunoglobulin; IQR, interquartile range; PCR, polymerase chain reaction; PRNT, plaque reduction neutralization test.