Health and Human Services Secretary Robert Kennedy’s proposal to end the government’s existing Covid vaccine recommendation for healthy pregnant women, if enacted, will be a major setback to decades’ worth of efforts to advance the health of pregnant people and their babies.

It also profoundly unethical.

Pregnant people are consistently left behind in biomedical R&D in ways that are deeply harmful to the health of both mother and child. In the decade before the Covid pandemic, consensus reports emerged denouncing this pregnancy evidence gap and providing road maps for how to ethically generate evidence during pregnancy within the confines of existing research regulations. I co-led one of these efforts, the PREVENT project, initiated in response to the Zika epidemic and completed in fall 2019. PREVENT specifically focused on how to ethically include pregnant women in the development and deployment of new vaccines for emerging pandemic threats.