Table 2 Distribution of serological results in different age groups
Age group | IgG-IgM-(%) | IgG+alone (%) | IgM+alone (%) | IgG+IgM+(%) | Overall IgM+ | Total | Cumulative infection rate | Recent infection rate |
|---|---|---|---|---|---|---|---|---|
1-14 d | 938 | 548 | 8 | 8 | 16 | 1502 | 37.5 | 1.7 |
(62.5) | (36.5) | (0.5) | (0.5) | (1) | (100) | |||
15-28 d | 384 | 179 | 8 | 1 | 9 | 572 | 32.9 | 2.3 |
(67.1) | (31.3) | (1.4) | (1.7) | (1.5) | (100) | |||
29 d-3 m | 982 | 392 | 221 | 180 | 401 | 1775 | 44.7 | 28.9 |
(55.3) | (22.1) | (12.5) | (10.1) | (22.6) | (100) | |||
4-6 m | 315 | 230 | 50 | 110 | 160 | 705 | 55.3 | 33.7 |
(44.7) | (32.6) | (7.1) | (15.6) | (22.7) | (100) | |||
7-12 m | 944 | 868 | 17 | 35 | 52 | 1864 | 49.3 | 5.2 |
(50.6) | (46.6) | (0.9) | (1.9) | (2.8) | (100) | |||
1-3 y | 521 | 288 | 6 | 5 | 11 | 819 | 36.4 | 2.1 |
(63.6) | (35.1) | (0.7) | (0.6) | (1.3) | (100) | |||
4-6 y | 432 | 178 | 1 | 4 | 5 | 615 | 29.8 | 1.1 |
(70.2) | (29.0) | (0.2) | (0.6) | (0.8) | (100) | |||
Total | 5048 | 2836 | 315 | 346 | 661 | 7852 |