NEW YORK (AP) — All 17 experts recently dismissed from a government vaccine advisory panel published an essay Monday decrying “destabilizing decisions” made by U.S. Health Secretary Robert F. Kennedy Jr. that could lead to more preventable disease spread.

Kennedy Jr. on Wednesday named eight new vaccine policy advisers to replace the panel that he abruptly dismissed earlier this week. They include a scientist who researched mRNA vaccine technology and became a conservative darling for his criticisms of COVID-19 vaccines,

RFK Jr. ousted the entire vaccine advisory panel, prompting backlash from experts who warned his abrupt decisions and controversial appointments could endanger U.S. immunization efforts and increase preventable disease outbreaks.