Table 3. Zika virus serology among 94 patients with confirmed Zika virus infection and among 85 patients with negative Zika virus RT-PCR at the time of enrollment.
| Visit | Median days since symptoms onset (IQR) | Positive IgM (%) | Positive IgG (%) | IgM/IgG dual positive (%) |
|---|---|---|---|---|
| Patients with confirmed Zika virus infection (N=94) | ||||
| Baseline | 3 (1-4) | 4/72 (6) | 11/72 (15) | 2/72 (3) |
| Visit 1 (≤14d) | 13 (11-14) | 6/7 (86) | 6/7 (86) | 6/7 (86) |
| Visit 2 (15-28d) | 17 (16-20) | 32/49 (65) | 47/49 (96) | 30/49 (61) |
| Visit 3 (>28d) | 47 (31-52) | 4/17 (24) | 16/17 (94) | 4/17 (24) |
| Patients with negative Zika virus RT-PCR at enrollment (N=85) | ||||
| Baseline | 4 (2-5) | 5/85 (6) | 21/85 (25) | 1/85 (1) |
IQR: interquartile range; RT-PCR: real-time polymerase chain reaction