Health Secretary Robert F. Kennedy Jr.’s new vaccine advisory committee will vote Thursday on new guidance for shots against hepatitis B and chickenpox, raising worries among public health experts that the votes and discussions will create unwarranted vaccine concerns among parents.

The panel’s vote may also influence insurance coverage and a government program that pays for vaccines for low-income families, experts warned. And on Friday, the panel will discuss shots against COVID-19.

Kennedy, a leading anti-vaccine activist before becoming the nation’s top health official, has made or proposed numerous changes to the nation’s vaccine system, including firing the entire 17-member panel earlier this year and replacing it with a group that includes several anti-vaccine voices.

The morning

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