Study Shows Traces Of COVID-19 Vaccine In Some Mothers’ Breast Milk

According to a study published on the JAMA Network, the COVID-19 vaccine showed up in breast milk samples from five out of 11 women in the study.

All of the women in the study were healthy and had received either a Pfizer of Moderna COVID-19 vaccine within six months of delivering their babies.

Five of the participants had received Pfizer’s COVID-19 vaccine and six received the Moderna vaccine. Two of the women with the vaccine in their breast milk had the Pfizer shot, while the other three received the Moderna vaccine.

Prior to the study, entitled “Detection of Messenger RNA COVID-19 Vaccines in Human Breast Milk,” there had been a gap in vaccine research on children and lactating women.

“The Centers for Disease Control and Prevention recommends offering the COVID-19 mRNA vaccines to breastfeeding individuals, although the possible passage of vaccine mRNAs in breast milk resulting in infants’ exposure at younger than 6 months was not investigated,” researchers noted in the study.

The study comes as many health authorities advocate for mothers to receive a COVID-19 vaccine so that the mother can pass on antibodies to the baby through her breast milk.

“Numerous professional organizations and government health authorities recommend that COVID-19 vaccines be offered to those who are breastfeeding because the potential benefits of maternal vaccination during lactation outweigh any theoretical risks,” wrote researchers in a study published on the National Library of Medicine website.

The same study acknowledges that the infants may experience side effects, such as sleepiness, increased fussiness, fever, rash or self-limiting diarrhea. Additionally, a few nursing mothers in the study reported “blue or blue-green discoloration of their milk.”

Nonetheless, pharmaceutical companies continue a vigorous lobbying campaign for the federal government to open the vaccines to all Americans, including breastfeeding mothers. The Centers for Disease Control and Prevent, for its part, still recommends that breastfeeding mothers get vaccinated.