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The US Department of Health and Human Services (HHS) announced plans to mandate placebo-controlled trials for all new vaccines, a move described as a "radical departure" by critics. While HHS claims this ensures transparency, experts argue that this would slow vaccine access and raise ethical concerns, as many vaccines already undergo such trials. The plan's details remain unclear, particularly concerning which vaccines are included and the timeline for implementation. Critics like Peter Lurie raise ethical issues and potential limitations on vaccine availability. The announcement comes amid ongoing controversy surrounding HHS Secretary Robert F. Kennedy Jr.'s past vaccine safety claims.

Prepared by Olivia Bennett and reviewed by editorial team.