Breastfeeding women vaccinated against the new crown can also protect their babies

Now more and more people are getting the new crown vaccine, but many breastfeeding mothers worry about whether they can get the vaccine.

 A new study from Washington University School of Medicine in St.
Louis shows that vaccination during breastfeeding not only protects the mother, but also protects the baby for several months.

After being vaccinated with the new crown vaccine, breastfeeding mothers can deliver protective antibodies to their babies through breast milk for at least 80 days.

"The study showed that the new crown antibody was contained in breast milk two weeks after the first vaccine injection, and the antibody has been present during the three-month study.

At the end of the study, the antibody level was still high, so The protection period of the vaccine may be longer.

"On the basis of this small study, five mothers involved provided frozen breast milk samples after receiving two doses of Pfizer-BioNTech coronavirus vaccine, demonstrating that breastfeeding can provide long-lasting immune response.

The study started from the mother's baseline before the first vaccination, and tracked the level of COVID-19 antibodies in breast milk weekly for 80 days.

 The study was published in the American Journal of Obstetrics and Gynecology on March 30, doi: 10.
1016/j.
ajog.
2021.
03.
031 Although other recent studies have shown that antibodies produced by the COVID-19 vaccine are passed on to lactating infants through breast milk, But this is the first study to track specific levels of antibodies in breast milk over a longer period of time.

The infants included in the study ranged from one month to 24 months old.

To assess the immune response in breast milk, the researchers monitored the levels of immunoglobulins IgA and IgG, which are antibodies deployed by the immune system to fight infections in infants.

The results of the study confirmed that breast milk contained elevated levels of IgA and IgG antibodies immediately after the first vaccination, and that both antibodies in all participants reached immunologically significant levels within 14 to 20 days after the first vaccination.

The senior author of the study, Assistant Professor of Pediatrics, and M.
D.
Misty Good said: "Our study was limited by a small number of participants, but the results of the study provide encouraging news about the potential immune benefit of breastfed infants after vaccination.

"Our paper is the first to show that COVID-19 antibodies are still present in breast milk for a few months after the mother is vaccinated.

"Although further research on the maternal COVID-19 vaccine is needed to characterize the timing of antibody production in breast milk and its impact on infant infection rates, recent studies continue to confirm that the COVID-19 vaccine has real benefits for protecting mothers and children.

Kelly said: “The COVID-19 infection will be more serious during pregnancy.
The main benefit of vaccination is that it can protect mothers before they really get sick.
” There are now nearly 70,000 pregnant women who have received the COVID 19 vaccine and there is no evidence of harm.
.

"Kelly said:" we now see a series of new data, these data indicate that the vaccine for pregnant women will also help protect the baby - either by antibodies during pregnancy pass through the placenta and breast milk can also be passed through during breast-feeding.

"