BNT162b2 mRNA vaccine elicited antibody response in blood and milk of breastfeeding women.
Michal Rosenberg-FriedmanAya KigelYael BaharMichal WerbnerJoel AlterYariv YogevYael DrorRonit LubetzkyMoshe DessauMeital Gal-TanamyAriel ManyYariv WinePublished in: Nature communications (2021)
The importance of breastmilk in postnatal life lies in the strong association between breastfeeding and the reduction in the risk of infection and infection-related infant mortality. However, data regarding the induction and dynamics of breastmilk antibodies following administration of the Pfizer-BioNTech BNT162b2 COVID-19 mRNA vaccine is scarce, as pregnant and lactating women were not included in the initial vaccine clinical trials. Here, we investigate the dynamics of the vaccine-specific antibody response in breastmilk and serum in a prospective cohort of ten lactating women who received two doses of the mRNA vaccine. We show that the antibody response is rapid and highly synchronized between breastmilk and serum, reaching stabilization 14 days after the second dose. The response in breastmilk includes both IgG and IgA with neutralization capacity.
Keyphrases
- polycystic ovary syndrome
- clinical trial
- preterm infants
- sars cov
- pregnancy outcomes
- pregnant women
- coronavirus disease
- type diabetes
- randomized controlled trial
- insulin resistance
- cervical cancer screening
- heat stress
- coronary artery disease
- cardiovascular events
- metabolic syndrome
- machine learning
- breast cancer risk
- electronic health record
- big data
- phase iii
- quantum dots