Democrats on the Senate Health Committee launched an investigation on Tuesday into Health and Human Services Secretary Robert F. Kennedy Jr.'s firing of all members of a Centers for Disease Control and Prevention (CDC) vaccine advisory panel.

Led by ranking member Sen. Bernie Sanders (I-Vt.), who caucuses with Democrats, the lawmakers asked for detailed information about why Kennedy dismissed members of the CDC's Advisory Committee on Immunization Practices (ACIP), who else was involved in the process, and how the new members were identified and vetted.

“By removing all 17 of ACIP’s members and replacing them with eight individuals handpicked to advance your anti-vaccine agenda, you have put decades of non-partisan, science-backed work— and, as a result, Americans’ lives—at risk,” the lawmakers wrote.

In June, Kennedy........

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