Leaders also committed $4.5 billion in additional financing.
Also, the group recommends Merck's RSV preventive for babies and weighs in on the upcoming season's flu vaccines.
In a pre-recorded video delivered to Gavi leaders, Kennedy accuses the group of ignoring vaccine safety concerns and said the US government will withhold financial support.
Global rates for several vaccines declined sharply in 2020, and had not returned to pre-COVID-19 pandemic levels as of 2023.
Among the findings, 90% of Democrats, 68% of Republicans, and 66% of MAGA supporters agree with school vaccine mandates.
The announcement comes ahead of a summit that aims to raise at least $9 billion for Gavi, which helps provide vaccines to low-resource areas.
This week's meeting of ACIP is likely to mark its end—for now—as a vaccine advisory body.
The group is expected to vote on thimerosal, despite no evidence of harm, and will discuss the MMRV use in young children.
Former ACIP members pushed back on claims of public mistrust and warned dismantling has critically weakened US vaccination programs.
The US has been hit hardest, with more than 10,000 cases and 5 deaths, 4 of them in children younger than 1 year.
