The progression of maternal and acquired anti-RSV-IgG
| Month | n | Anti-RSV IgG(+)* (n) (%) | Anti-RSV IgG (RU/ml) Range (mean, SD) |
|---|---|---|---|
| *Positivity is defined as values ⩾20 RU/ml. | |||
| **Three (6%) are acquired RSV infection on follow up. | |||
| Maternal | 49 | 41 (83%) | 26–150 (71.2, 29.8) |
| Infants | |||
| 0 | 49 | 41 (83%) | 25–150 (73.8, 26.8) |
| 1 | 49 | 36 (73%) | 24–126 (46.2, 23.6) |
| 3 | 49 | 3 (6%) | 22–37 (32.5, 7.1) |
| 6 | 49 | 4 (8%)** | 20–110 (59.0, 37.8) |