It comes as a CDC advisory panel changes recommendations for childhood vaccines.
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The panel is newly appointed by Health Secretary Robert Kennedy Jr., who is a vaccine critic.
On Thursday, the panel decided to separate the chickenpox vaccine from the widely used MMR combination vaccine used to fight the measles, mumps, and rubella.
RELATED: Kennedy's advisory panel recommends new restrictions on MMRV vaccines
Friday, the panel could decide if newborns should no longer receive the Hepatitis B vaccine.
The Academy of Pediatrics is blasting the decision, telling parents not to listen.
ALSO SEE: Why doctors say the birth dose of the hepatitis B vaccine is still necessary
Pennsylvania and New Jersey has formally announced the Northeast Public Health Collaborative that will make its own vaccine recommendations.
Delaware has previously said it is joining a regional public health coalition.