Sage Open Medicine put an expression of concern on the paper on May 18. “This expression of concern will remain in place until the investigation concludes, and a final decision has been made.” Hooker and Kennedy coauthored the 2023 book Vax-Unvax: Let the Science Speak, which contains a chapter discussing the Sage paper at length. “Is Secretary Kennedy the best person to write this letter, given the huge (and undisclosed) conflict of interest regarding this specific case?” “Is Secretary Kennedy worried that this expression of concern will undermine the claims made in his book?