Kennedy, Jr. announced eight new members, including a physician criticized for spreading COVID-19 misinformation and conspiracy theories. Vaccine experts warned Kennedy's abrupt termination of the entire committee on June 9 would create public distrust around the government's role in promoting public health.

“Out of pocket costs for vaccines become an issue where we could end up with a system where some people can afford vaccinating themselves and their families and others cannot,” DeMatteis said.