Pregnant women who have previously been vaccinated are not routinely recommended to have a further dose of COVID-19 vaccine. However, they can consider a further dose of COVID-19 vaccine based on presence of underlying risk conditions and/or personal preference.
Previously vaccinated pregnant women who have no conditions that increase the risk of severe illness from COVID-19 have a very low risk of severe illness and pregnancy complications from Omicron infection. 28,30,31 However, a dose administered during pregnancy may reduce the risk of COVID-19 infection and hospitalisation in young infants through transplacental passage of antibodies, noting that the risk of severe illness in healthy young infants is extremely low.32-35
Comirnaty JN.1 and Omicron XBB.1.5-based vaccines can be used in pregnancy. Although the latest mRNA COVID-19 vaccines (Comirnaty JN.1 and Omicron XBB.1.5-based vaccines) have not been formally studied in pregnant women, ATAGI considers them suitable and safe for use.
