Table 2.
Proportion of seroprevalence, geometric mean concentration and ratio of measles IgG antibodies in umbilical cord/pregnant woman, Aburrá Valley, Colombia, 2016
| Value | Measles IgG antibody level, mIU/mL | Total | |
|---|---|---|---|
| < 150 | ≥ 150 | ||
| Maternal serum | |||
| n | 115 | 675 | 790 |
| Weighted proportion (95% CI) | 13.9% (12.2–15.8) | 86.1% (84.2–87.8) | 100.0% |
| GMC (95% CI) | 71 (60–85) | 782 (725–845) | 552 (504–605) |
| Cord blood serum | |||
| n | 84 | 650 | 734 |
| Weighted proportion (95% CI) | 11.1% (9.2–13.4) | 88.9% (86.6–90.8) | 100.0% |
| GMC (95% CI) | 78 (67–91) | 873 (804–948) | 662 (604–727) |
| Cord serum/maternal serum ratio | |||
| n | 84 | 649 | 733 |
| Median (min–max) | 0.93 | 1.26 | 1.22 |
GMC = geometric mean concentration.