A U.S. government scientist who oversees the team responsible for collecting data on COVID-19 and RSV hospitalizations used to shape national vaccine policy has resigned, citing concerns over how such data would be used by the Trump administration.

The resignation follows an order by Health and Human Services Secretary Robert F. Kennedy Jr. to change the agency's guidance.

Lakshmi Panagiotakopoulos said she could no longer help vulnerable people after officials removed recommendations to immunize children and pregnant women.

The American Pharmacists Association will withhold endorsing the U.S. Centers for Disease Control and Prevention's latest immunization schedule, which removed the recommendation for pregnant women to receive the COVID-19 vaccine.

A medical officer at the US Centers for Disease Control and Prevention who was working on the committee that was weighing changes to the agency’s Covid-19 vaccine recommendations resigned on Friday, the same day officials the US Department of Health and Human Services announced they had removed the CDC recommendation for pregnant women and healthy children to get Covid-19 vaccines.

RFK dismissed the CDC's scientific vaccine advisers. His appointees for replacements are raising concerns about vaccine policy and recommendations moving forward.

Moderna's shares fell 2.3% in early trading on Friday, on concerns whether a new CDC advisory panel would back the use of the company's respiratory syncytial virus vaccine in a broader age group. The RSV shot,

The FDA expanded its approval of Moderna's RSV vaccine on Thursday to include adults under age 60 at increased risk of the disease.