Supplemental Digital Content 6: Correlation between infant blood and breast milk levels Specimen
Type
Antibod y
Correlatio n
coefficient P- Value
Specimen Type
Antibod y
Correlatio n
coefficient P- Value
Spike Protein Infant
blood delivery*
and breast milk delivery
IgG -0.12 0.66 Infant
blood 6 weeks and breast milk delivery
IgG -0.16 0.69
IgM 0.47 0.08 IgM 0.21 0.62
IgA -0.32 0.20 IgA -0.30 0.43
Nucleocapsid Protein Infant
blood delivery*
and breast milk delivery
IgG 0.52 0.04 Infant
blood 6 weeks and breast milk delivery
IgG -0.25 0.51
IgM 0.18 0.51 IgM -0.13 0.76
IgA -0.17 0.52 IgA -0.50 0.17
Spike Protein Infant
blood delivery*
and breast milk 6 weeks
IgG 0.97 <0.0001 Infant blood 6 weeks and breast milk 6 weeks
IgG 0.61 0.02
IgM -0.07 0.78 IgM 0.10 0.78
IgA 0.10 0.66 IgA 0.01 0.97
Nucleocapsid Protein Infant
blood delivery*
and breast milk 6 weeks
IgG -0.05 0.82 Infant
blood 6 weeks and breast milk 6 weeks
IgG -0.24 0.40
IgM -0.09 0.72 IgM 0.19 0.58
IgA 0.08 0.74 IgA 0.10 0.72
*Infant blood delivery indicates either an infant blood samples or cord blood sample
