A Centers for Disease Control and Prevention official said Tuesday she was resigning from her role overseeing updates to the agency's COVID-19 vaccine recommendations, following an order by Health and Human Services Secretary Robert F. Kennedy Jr. to force an update to the agency's guidance.

"My career in public health and vaccinology started with a deep-seated desire to help the most vulnerable members of our population, and that is not something I am able to continue doing in this role," Dr. Lakshmi Panagiotakopoulos wrote in an email to the COVID-19 vaccines work group in the agency's Advisory Committee on Immunization Practices (ACIP).

Panagiotakopoulos had served as one of the leads of this ACIP work group. She sent an email to members of the group early Tuesday morning to

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