Table 2 Concentrations of anti-S1 antibodies (IgG) in serum and breast milk according to the type of vaccine received

Anti-S1 IgG serum (AU/mL)

BNT16b2

39

71–22,988

1604.69 (4235)

0.16

2,59

0.85

mRNA-1273

11

372–3093

1381.92 (757)

ChAdOx1-S

12

118–7040

2178.62 (2431)

Anti-S1 IgG breast milk (AU/mL)

BNT16b2

39

0–149

13.62 (28)

0.13

2,59

0.88

mRNA-1273

11

0–34

11.09 (10)

ChAdOx1-S

12

0–54

16.09 (17)