The 17 members of the CDC's vaccine advisory committee, who were ousted last week, argued their abrupt dismissal has "left the U.S. vaccine program critically weakened."

Fiona Havers, who oversees CDC respiratory virus data, told colleagues she no longer had confidence the data would be used objectively to set vaccine policy.

Seventeen vaccine experts who were dismissed from a federal advisory panel last week say they are worried that recent moves by US Health and Human Services Secretary Robert F. Kennedy Jr. will destabilize vaccine policy in the US and jeopardize access to lifesaving immunizations.