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  • COVID-19 booster taken...

COVID-19 booster taken by lactating mothers provides antibody protection to infants transferred via breast milk: Study

Written By : Dr. Kamal Kant Kohli Published On 2024-03-13T19:00:23+05:30  |  Updated On 13 March 2024 7:00 PM IST
COVID-19 booster taken by lactating mothers provides antibody protection to infants transferred via breast milk: Study
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USA: A recent study published in Frontiers in Nutrition has shown the importance of breast milk and breastfeeding for infant health during a pandemic.

The study from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and the UF College of Medicine found that lactating mothers who get the COVID-19 booster pass along the antibodies to their children via their breast milk-and potentially protect babies too young to receive the vaccine.

The study is the third in a series that looks at antibody protection being transferred via breast milk from mothers who received their first two COVID-19 vaccinations and, now, the booster shot. The second publication reported the same antibody transfer via breast milk.

“We think that breast milk may play an important role in protecting the infants during the first six months of life from COVID,” said Dr. Vivian Valcarce, a former UF College of Medicine researcher who worked on this study. She now is an assistant professor at the University of Alabama at Birmingham. “We continue to see babies being hospitalized from COVID-19 infections.”

The study looked at how breast milk antibody protection changed when a mother received their first COVID-19 booster shot, said Joseph Larkin, UF/IFAS associate professor of microbiology and cell science and part of UF’s Emerging Pathogens Institute. Researchers looked at the antibody response and antibody functionality in breast milk and tested to see if antibodies were present after the babies drank breast milk with COVID-19 antibodies.

Larkin said this study suggests that breastfeeding can provide COVID-19 antibodies for infants too young to receive a vaccination – and that the antibodies wane in people’s bodies over time, so getting a booster can provide prolonged protection to babies that drink breast milk.

“When babies are born, they have an immature immune system, so they rely heavily on mom’s immune system,” he said. “Breastfeeding can serve as a gap in between while babies are building their own immune system.”

Larkin said some antibodies are transferred to fetuses through the placenta, as well, but that initial protection also lessens over time.

In this study, 14 lactating mothers and their babies were followed from before they received their COVID-19 booster until after they received their booster shots, Larkin said. Researchers tested the mothers’ blood to confirm their bodies made COVID-19 antibodies after a booster shot, tested breast milk to confirm the milk had antibodies in it and tested babies’ poop to confirm antibodies were present in the babies’ bodies.

To see if the breast milk’s antibodies worked against COVID-19, breast milk was placed in a 96-well plate with a lab-safe COVID virus strain, and researchers found these antibodies from the mother disable the virus, said Lauren Stafford, a UF/IFAS graduate research assistant and Ph.D. candidate in microbiology and cell science.

The study was a collaboration between UF/IFAS and the UF College of Medicine and included Dr. Josef Neu, professor of pediatrics within the division of neonatology at the UF College of Medicine.

“This shows how important breast milk and breastfeeding is for infant health during a pandemic,” Valcarce said.

Reference:

Vivian Valcarce, Lauren Stewart Stafford, Josef Neu, Leslie Parker, Valeria Vicuna, Tyler Cross, Olivia D'Agati, Sisse Diakite, Addison Haley, Jake Feigenbaum Mahmoud Y. Al Mahmoud, Anjali Visvalingam, Nicole Cacho, Ivan Kosik, Jonathan W. Yewdell, COVID-19 booster enhances IgG mediated viral neutralization by human milk in vitro, Frontiers in Nutrition, https://doi.org/10.3389/fnut.2024.1289413.

Frontiers in NutritionBreastfeedingcovid 19antibodiesCovid 19 Vaccine
Source : Frontiers in Nutrition
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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