Health Secretary Robert F. Kennedy Jr. said on Tuesday that the vaccine would no longer appear on the childhood immunization schedule. C.D.C.’s update counters his policy.

Days after Health Secretary Robert F. Kennedy Jr. announced that Covid shots would be removed from the federal immunization schedule for children, the Centers for Disease Control and Prevention issued updated advice that largely countered Mr. Kennedy’s new policy.

The agency kept Covid shots on the schedule for healthy children 6 months to 17 years old, but added a new condition. Children and their caregivers will be able to get the vaccines in consultation with a doctor or provider, which the agency calls “shared decision-making.”

The shots will also remain available under those terms to about 38 million low-income children who rely on the Vaccines for Children program, according to an emailed update from the C.D.C. on Friday.

Mr. Kennedy’s original pronouncement on Tuesday had caused an uproar among pediatricians and public health experts, who pointed out that very young children and pregnant women face high risks of severe illness from the virus. Many also worried that the new policy would prompt insurers and government programs to reduce or drop coverage of the cost of the shots.

The latest changes clarify coverage for healthy children older than 6 months. But they leave those highest-risk groups — pregnant woman and young infants who are covered by immunization during pregnancy — without a formal recommendation.

The quick retreat this week from Mr. Kennedy’s vaccine proposals adds to a long list of Trump administration pledges that have been reversed days later. President Trump’s tariff policies, for example, have been revised repeatedly, and often weakened, after his tougher, initial actions.