TABLE 1.

Comparison of the mean IgG avidity values for primary and secondary dengue infectionsa

Days after onset of DFPrimary infectionSecondary infection
Avidity measureMean AI (SD)Avidity measureMean AI (SD)
1340.0 (0.00)1252.2 (29.87)
21445.7 (16.81)6058.1 (36.33)
3741.2 (6.85)6636.3 (35.17)
4603.7 (9.86)4467.0 (19.33)
58818.0 (24.22)2670.7 (9.25)
62023.4 (18.11)1266.7 (18.56)
7-98645.4 (22.29)1872.9 (21.67)
10-1912652.1 (29.16)6288.9 (12.09)
20-299250.1 (22.50)8875.5 (23.83)
>301462.4 (23.67)1477.1 (24.85)
Total73825.9 (29.98)40266.3 (30.47)
  • a Based on WHO criteria. AI, avidity index.