At the first meeting of a controversial new group of vaccine advisers to the US Centers for Disease Control and Prevention, the committee announced new plans to study established vaccine guidelines.

A federal vaccine advisory committee plans to review the childhood vaccination schedule and scrutinize vaccines that have been approved for decades, fueling concerns that the panel may consider changes to long-standing vaccine recommendations.

The US Centers for Disease Control and Prevention’s vaccine panel is adding new subcommittees to review the current childhood immunization schedule and examine shots that haven’t been studied in at least seven years,