1. United States
2. Texas
3. Letter

The new rules proposed by HHS Secretary Robert F. Kennedy Jr. requiring placebo-controlled clinical trials for updated Covid-19 vaccines could significantly delay their rollout for the fall season. Vaccine experts have warned that it is unethical and impractical to conduct placebo trials when approved and effective vaccines already exist. These stringent requirements would make it extremely unlikely for Pfizer and Moderna to have their updated boosters ready in time. Delaying the availability of updated vaccines tailored to combat the currently circulating strains risks leaving the population vulnerable to potential surges and new variants. Maintaining access to timely boosters aligned with public health recommendations is crucial for protecting communities. I urge you to reconsider these proposed changes and prioritize expediting the review process for updated Covid-19 vaccines to safeguard public health and preparedness.