Robert Kennedy Jr. is President-elect Donald Trump’s nominee to lead the Department of Health and Human Services|Gage Skidmore|CC BY-SA 2.0

Robert Kennedy Jr.’s lawyer, Aaron Siri, asked the FDA to revoke the approval of the polio vaccine in 2022, according to the New York Times.

The petition has experts baffled as the poliovirus can cause paralysis or death.

Siri has also filed a petition to pause 13 other vaccine distributions. RFK Jr. is President-elect Donald Trump’s nominee to lead the Department of Health and Human Services.