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. 2021 Nov 3;12:777103. doi: 10.3389/fimmu.2021.777103

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Copyright © 2021 Golan, Prahl, Cassidy, Gay, Wu, Jigmeddagva, Lin, Gonzalez, Basilio, Chidboy, Warrier, Buarpung, Li, Murtha, Asiodu, Ahituv, Flaherman and Gaw

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Correlations between milk antibodies, blood antibodies and infant age. Two-tailed Spearman correlation was used to correlate milk IgA (A) and IgG (B) levels (Y axis) and infant age (X axis) 4-10 weeks after the 2nd dose administration (n=30). In addition, two-tailed Spearman correlation was used to correlate milk IgG (Y axis) and milk IgA levels (X axis) on the day of 2nd dose administration (C), 21-28 days after 1st dose (n=35) and 4-10 weeks after 2nd dose (D). We also tested correlation between milk (Y axis) and maternal plasma (X axis) IgG levels at day of 2nd dose (E) and 4-10 weeks after the 2nd dose administration (F) (n=30). Semi-partial correlations were used to assess relationships between variables while controlling for the effects of other relevant variables.