Preliminary research has shown that pregnant women who have had COVID-19 or have been vaccinated are more likely to pass antibodies to their newborn babies.

This conclusion was reached by experts at the Shaare Zedek Medical Center in Jerusalem.

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Although it has long been known that various antibodies can be passed from mother to infant during breastfeeding, there is still little scientific research on antibodies to coronavirus. 

Dr. Alona Bin-Nun, a neonatologist and head of the neonatal intensive care unit in Shaare Zedek, noted that it is safe to assume that mothers who have had COVID-19 or were vaccinated during pregnancy pass antibodies to their babies. 

“We developed specific guidelines, including advising mothers to wear masks as they breastfed, but it was clear to everyone that a woman who got sick was probably going to develop antibodies against the disease and those could be passed on to the babies”

says the doctor.

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Pregnant women in Israel are advised to be vaccinated against coronavirus in the second or third trimester. 

“Many women have been vaccinated in Israel and no side effects have been reported,” Bin-Nun said.

“We saw this spike [in antibodies] that started to climb at seven days after the first shot, and then it dips down,” said Jason Baird, a cancer immunologist and staff research scientist from Providence Portland Medical Center in Oregon, told Portland’s KGW8 channel. “And then you get your booster, and then you see it take off again.”

The doctor from Shaare Zedek also emphasized that for effective transmission of antibodies from coronavirus, it is necessary to feed the baby exclusively with breast milk for at least the first six months. 

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“The more breast milk a baby gets, the higher the antibody count,” Bin-Nun added.