Article ; Online: Safety and Efficacy of Coronavirus Disease 2019 (COVID-19) mRNA Vaccines During Lactation.
2023 Volume 141, Issue 3, Page(s) 483–491
Abstract: In this review, we summarize the data on the safety and side-effect profile of coronavirus disease 2019 (COVID-19) vaccines during lactation to date, review what is known about mRNA vaccine components in breast milk, and discuss the efficacy of COVID-19 ... ...
Abstract | In this review, we summarize the data on the safety and side-effect profile of coronavirus disease 2019 (COVID-19) vaccines during lactation to date, review what is known about mRNA vaccine components in breast milk, and discuss the efficacy of COVID-19 vaccines in providing immune protection for the breastfeeding infant. The Centers for Disease Control and Prevention and the American College of Obstetricians and Gynecologists recommend that lactating individuals receive COVID-19 mRNA vaccines and stay up to date on booster doses, including the bivalent COVID-19 booster. The lack of serious side effects in mothers or infants across numerous large studies and registries of COVID-19 vaccination in pregnancy and lactation is reassuring. Although small quantities of mRNA may be transiently detectable in breast milk after maternal vaccination, there are no data demonstrating that vaccine mRNA can survive the infant gastrointestinal tract and no evidence that breast milk from lactating individuals who have received a COVID-19 mRNA vaccine can cause harm to breastfeeding infants. In contrast, numerous studies demonstrate that the breast milk of vaccinated individuals contains severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific functional antibodies and T cells, which benefit the breastfeeding infant's developing immune system. Transfer of SARS-CoV-2-specific antibodies from mother to infant is highest when vaccination occurs during pregnancy compared with lactation, because the breastfeeding infant receives both long-lasting antibodies through the placenta and breast-milk antibodies through breast milk. With clear data demonstrating efficacy and safety and no data demonstrating harm to mother or infant after COVID-19 vaccine administration during lactation, any recommendations to avoid vaccination while breastfeeding or to withhold breast milk from the infant for any period of time after vaccination are not supported by available evidence. |
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MeSH term(s) | Female ; Humans ; Infant ; Pregnancy ; Antibodies, Viral ; Breast Feeding ; COVID-19/prevention & control ; COVID-19 Vaccines/adverse effects ; Lactation ; Mothers ; RNA, Messenger ; SARS-CoV-2 |
Chemical Substances | Antibodies, Viral ; COVID-19 Vaccines ; RNA, Messenger |
Language | English |
Publishing date | 2023-01-18 |
Publishing country | United States |
Document type | Review ; Journal Article ; Research Support, N.I.H., Extramural |
ZDB-ID | 207330-4 |
ISSN | 1873-233X ; 0029-7844 |
ISSN (online) | 1873-233X |
ISSN | 0029-7844 |
DOI | 10.1097/AOG.0000000000005093 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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