Submit your letter to the editor via this form. Read more Letters to the Editor. Kennedy allies foster uncertainty in vaccines Re: “Kennedy’s panel recommends new restrictions on chicken pox, measles, mumps and rubella vaccines” (Sept. 19). The recent recommendation from Health Secretary Robert F. Kennedy Jr.’s advisory panel to restrict the combined MMRV vaccine for children under 4 is troubling. While the panel cites concerns about rare fever-related seizures, the broader implications risk undermining confidence in vaccines that have protected generations from measles, mumps, rubella and chickenpox. Parents already face challenges navigating vaccine schedules. Replacing a single shot with...