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HHS Secretary Robert F. Kennedy Jr. implemented a new policy mandating placebo testing for all "new" vaccines. This "radical" change, described by a spokesperson, requires new vaccines to undergo studies where half of participants receive a placebo. While the policy's scope remains unclear, it could impact future COVID-19 vaccines, potentially delaying their release. The spokesperson emphasized adherence to the "Gold Standard of Science", but experts debate the ethics of placebo trials for already proven vaccines, citing potential risks to participants.

Prepared by Olivia Bennett and reviewed by editorial team.