Babies born to mothers who were vaccinated against COVID-19 with an mRNA vaccine during pregnancy were less likely to test positive for SARS-CoV-2 in their first four months of life, according to a new study published in June 2022 in JAMA Internal Medicine.

Pregnant women are strongly encouraged to get the vaccine and the booster to reduce their own risk of severe COVID-19 symptoms, but researchers wanted to know if this benefit extends to newborns, as well. Children under 1 year of age are at higher risk of critical illness from COVID-19 compared to older children, according to a 2020 meta-analysis published in the Journal of Medical Virology.

It's known that maternal immunization against various illnesses, including pertussis and