A new modeling study finds that proposed changes to the hepatitis B vaccination schedule in the United States could increase chronic hepatitis B infections among children. The research suggests that moving away from routine vaccination at birth—either by delaying shots or by using a shared decision-making approach—would reduce protection during the period when infants face the highest risk of infection.
The findings, reported by outlets including Medical Xpress, The New York Times, and TIME, estimate that ending routine vaccination at birth could increase chronic infections by up to about 83% at the population level. Other results in the same body of analysis indicate that even delays of only a few months could lead to substantial harm. The coverage reflects a common focus on public health impact and model-based estimates, while varying in the emphasis on specific policy alternatives described in connection with recommendations this year.
Taken together, the reports highlight that the study’s projections depend on assumptions about coverage, timing, and how vaccination decisions affect infant exposure risk, but they broadly converge on the conclusion that less protection at birth would likely translate into more long-term infections.
