Cited by 285SARS-CoV-2 and COVID-19 ResearchCOVID-19 Impact on ReproductionInfant Nutrition and Health

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SARS-CoV-2–Specific Antibodies in Breast Milk After COVID-19 Vaccination of Breastfeeding Women

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Perl, Sivan Haia, Uzan-Yulzari, Atara, Klainer, Hodaya, Asiskovich, Liron, Youngster, Michal, Rinott, Ehud, Youngster, Ilan·2021·JAMA

DOI 10.1001/jama.2021.5782PMC PMC8042567

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Abstract

This study found robust secretion of SARS-CoV-2 specific IgA and IgG antibodies in breast milk for 6 weeks after vaccination.IgA secretion was evident as early as 2 weeks after vaccination followed by a spike in IgG after 4 weeks (a week after the second vaccine).A few other studies have shown similar findings in women infected with COVID-19.5 Antibodies found in breast milk of these women showed strong neutralizing effects, suggesting a potential protective effect against infection in the infant.The study has limitations.First, no functional assays were performed.However, previous studies have showed neutralizing capacities of the same antibodies as measured for this study.Second, serum antibody testing or SARS-CoV-2 real-time reverse-transcriptase polymerase chain reaction testing were not performed, which would have provided interesting correlates.

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Additional file 1 of Development of SARS-CoV-2 specific IgG and IgA antibodies in serum and milk with different SARS-COV-2 vaccines in lactating women
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Additional file 1 of Multi-site observational maternal and infant COVID-19 vaccine study (MOMI-vax): a study protocol
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Authors: Perl, S. H., Uzan-Yulzari, A., Klainer, H., Asiskovich, L., Youngster, M., Rinott, E., & Youngster, I.
Affiliations: Assaf Harofeh Medical Center (IL)
Ben-Gurion University of the Negev (IL)
Tel Aviv University (IL)
Corresponding author: Youngster, Ilan
ORCID: Perl, Sivan Haia
Uzan-Yulzari, Atara
Youngster, Michal
Rinott, Ehud
Youngster, Ilan
Venue: JAMA
Publisher: American Medical Association (AMA)
Published: 2021-05-18
Volume: 325
Issue: 19
Pages: 2013
ISSN: 0002-9955 (ISSN-L)
0098-7484
DOI: 10.1001/jama.2021.5782
PMC: PMC8042567
OpenAlex: W3155604755
Cited by: 285
References: 3
Citations by year: 2026: 10 · 2025: 12 · 2024: 19 · 2023: 57 · 2022: 102 · 2021: 85
FWCI: 20.82
Type: journal article
Language: en
Open access: bronze
doi.org
Locations: JAMA (publishedVersion)
Europe PMC (PubMed Central) (publishedVersion)
PubMed Central (publishedVersion)
PubMed (publishedVersion)
Topics: Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
Health Sciences › Medicine › Obstetrics and Gynecology › COVID-19 Impact on Reproduction
Health Sciences › Nursing › Nutrition and Dietetics › Infant Nutrition and Health
Keywords: SARS-CoV-2, COVID-19 vaccination, breastfeeding, breast milk, IgA, IgG, maternal antibodies, infant protection, neutralizing antibodies, vaccine response
MeSH terms: COVID-19, COVID-19 Vaccines, Adult, Antibodies, Viral, Breast Feeding, Female, Humans, Immunoglobulin A, Immunoglobulin G, Milk, Human, Prospective Studies

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SARS-CoV-2–Specific Antibodies in Breast Milk After COVID-19 Vaccination of Breastfeeding Women

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