Last Friday, Centers for Disease Control vaccine advisers changed the recommendation of a routine hepatitis B shot for all newborns, a change widely viewed as a victory for Health and Human Services Secretary Robert F. Kennedy Jr. Now, health experts warn the change could undo decades of public health improvements, and parents are left with unclear guidance. USA TODAY Consumer Health Reporter Ken Alltucker joins USA TODAY’s The Excerpt to look at how this decision will affect children and families across the country.

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