Baird, J. K., Jensen, S. M., Urba, W., Fox, B. A., & Baird, J. R. SARS-CoV-2 antibodies detected in human breast milk post-vaccination. medRxiv. March 2021.
Researchers at Providence Cancer Institute and the Earle A. Chiles Research Institute studied milk samples from mothers before and after getting vaccinated. The study found that there were elevated levels of SARS-CoV-2 antibodies after vaccination and reinforces the idea that babies may be protected from COVID-19 through breast milk antibodies.