Former Centers for Disease Control and Prevention (CDC) immunizations chief Dr. Demetre Daskalakis said Sunday that he’s concerned with the direction the agency is going and worried about people’s health care needs going forward.

Daskalakis resigned from the CDC on Thursday in protest following the Department of Health and Human Services (HHS) removing CDC Director Susan Monarez from her position. In his resignation letter, Daskalakis denounced HHS Secretary Robert F. Kennedy Jr.'s leadership of both the HHS and the CDC.

“From my vantage point as a doctor who's taken the Hippocratic Oath, I only see harm coming. I may be wrong, but based on what I'm seeing, based on what I've heard with the new members of the Advisory Committee for Immunization Practices, or ACIP, they're really moving in an ideological direction where they want to see the undoing of vaccination," Daskalakis told ABC News' "This Week" co-anchor Martha Raddatz.

This is a developing story. Please check back for updates.