Prospective cohort study shows COVID-19 vaccination enhances IgA and IgG in lactation, suggesting booster doses increase antibody levels.
COVID-19 vaccination during lactating induces SARS-CoV-2 specific IgA and IgG antibodies in human milk. Antibody levels were higher following mRNA vaccination compared to AVV vaccination, with booster doses enhancing these levels further.
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Muyldermans et al. (2026) studied this question.
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