Table 2.
Baseline serum and breast milk IgG and IgA antibodies in study and control groups.
| Antibodies | Study Group (No Prior Infection) (n = 28) | Control Group (No Prior Infection) (n = 16) | p Value * |
|---|---|---|---|
| Serum IgG (BAU/mL) | 4.62 ± 3.57 (3.2, 3.2–4.1) |
3.41 ± 0.80 (3.2, 3.2–3.2) |
0.152 |
| Breast milk IgG (BAU/mL) | n.d. | n.d. | - |
| Serum IgA (ratio) | 0.33 ± 0.37 (0.19, 0.14–0.33) |
0.17 ± 0.07 (0.16, 0.12–0.22) |
0.129 |
| Breast milk IgA (ratio) | 0.55 ± 0.32 (0.49, 0.32–0.71) |
0.69 ± 0.39 (0.57, 0.42–0.90) |
0.371 |
Data are presented as mean ± SD (median, IQR); n.d.—not detected; IgG breast milk lower detection limit was 0.32 BAU/mL; * study vs. control group (no prior infection); Mann–Whitney U test.