Newborns of COVID-vaccinated moms may be protected from infection

Two new Israeli studies find that COVID-19 antibodies pass robustly from mothers to their infants in breast milk for 6 weeks after vaccination and that no infants breastfed by their coronavirus-positive mothers had evidence of infection. The first study, led by researchers from Shamir Medical Center in Zerifin, Israel, and published as a research letter yesterday in JAMA, involved 504 breast milk samples from a convenience sample of 84 healthcare workers who chose to be vaccinated against COVID-19 because of their occupational risk for COVID-19 infection. All participants received two doses of the Pfizer/BioNTech coronavirus vaccine 21 days apart and were recruited through ads and social media from throughout Israel from Dec 23, 2020, to Jan 15, 2021. The women provided breast milk samples before they received the vaccine and then once a week for 6 weeks starting 2 weeks after the first dose, and completed weekly questionnaires.