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Vaccinated Breastfeeding Mothers Pass COVID-19 Antibodies to Babies

“This research is the first to detect SARS-CoV-2 antibodies in stool samples from infants of vaccinated mothers,” says lead writer Vignesh Narayanaswamy, a Ph.D. candidate within the breastmilk analysis lab of senior writer Kathleen Arcaro, professor of environmental toxicology within the Department of Veterinary and Animal Sciences.

Thirty lactating ladies from throughout the U.S. – many of the healthcare employees – had been enrolled within the examine. They acquired the COVID-19 mRNA vaccine between January and April 2021.

The ladies offered breast milk samples earlier than they had been vaccinated, throughout two to a few weeks after their first vaccine dose and throughout three weeks after the second dose.

They additionally gave samples of their blood, noticed on playing cards, 19 days after the primary dose and 21 days after the second dose.

Infant stool samples had been collected 21 days after the moms’ second vaccination. Pre-pandemic samples of breast milk, dried blood spots, and toddler stools had been used as controls for the examine.

The samples had been examined for the receptor-binding area (RBD)-specific immunoglobulin (Ig)A and IgG antibodies. In the breast milk samples, anti-RBD IgG antibodies had been discovered to neutralize the protein spike of SARS-CoV-2, in addition to 4 variants.

A major enhance in cytokine ranges additionally revealed the immune response in breast milk samples. Anti-RBD IgG and anti-RBD IgA antibodies had been detected in 33% and 30% of toddler stool samples, respectively.

The ranges of antibodies correlated with the vaccine unwanted side effects the mom skilled.

While lactating and pregnant ladies had been urged to be vaccinated, no pregnant or breastfeeding ladies had been included within the vaccine trials.

Source: Medindia

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