Table 1.
Demographic characteristics of subjects in serological survey
| Age (years) | Age (mean ± SD) | Male n (%) | Female n (%) | Total n (%) |
|---|---|---|---|---|
| <1 | 0.7 ± 0.2 | 20 (44.4) | 25 (55.6) | 45 (8.74) |
| 1–3 | 1.7 ± 0.7 | 35 (52.2) | 32 (47.8) | 67 (13.01) |
| 4–6 | 4.7 ± 0.9 | 49 (51.0) | 47 (49.0) | 96 (18.64) |
| 7–19 | 13.1 ± 4.3 | 45 (52.3) | 41 (47.7) | 86 (16.7) |
| 20–39 | 29.9 ± 5.7 | 30 (44.8) | 37 (55.2) | 67 (13.01) |
| 40–59 | 49.3 ± 5.7 | 43 (50) | 43 (50) | 86 (16.7) |
| ≥60 | 66.3 ± 5.8 | 33 (48.5) | 35 (51.5) | 68 (13.2) |
| Total | 255 (49.5) | 260 (50.5) | 515 |
All healthy subjects were recruited from an status surveillance of infection diseases at the Xiamen City Center for Disease Control and Prevention in the Fujian Province in China in 2016.