Table 1.
Detection of anti-Zika virus IgM antibody and neutralizing antibody titers against Zika virus and the four dengue virus types in a pregnant woman infected with Zika virus, Puerto Rico, 2016.
| Plaque Reduction Neutralization Test (PRNT) | ||||||
|---|---|---|---|---|---|---|
| Days Post Onset of Symptoms | Anti-ZIKV IgM ELISA | ZIKV | DENV-1 | DENV-2 | DENV-3 | DENV-4 |
| 0 | Neg | <10 | 20 | 640 | 40 | 40 |
| 15 | Pos | 5120 | 2560 | >20,480 | 2560 | 320 |
| 22 | Pos | 5120 | 2560 | >20,480 | 2560 | 160 |
| 29 | Pos | 5120 | 1280 | ≥20,480 | 640 | 160 |
| 36 | Pos | 5120 | 320 | 20,480 | 640 | 320 |
| 50 | Pos | 5120 | 640 | 20,480 | 640 | 160 |
| 54 | ND | 10,240 | 320 | 10,240 | 640 | 160 |
| 64 | Pos | ND | ND | ND | ND | ND |
| 78 | Pos | ND | ND | ND | ND | ND |
| 92 | Neg | ND | ND | ND | ND | ND |
| 120 | Neg | ND | ND | ND | ND | ND |
| 137 | Neg | ND | ND | ND | ND | ND |
| 151 | Neg | ND | ND | ND | ND | ND |
| 165 | Neg | ND | ND | ND | ND | ND |
| 179 | Neg | ND | ND | ND | ND | ND |
Abbreviations: ZIKV = Zika virus; DENV = dengue virus, ND = not done.