For the second time this year, the U.S. CDC’s Advisory Committee on Immunization Practices (ACIP) canceled a scheduled meeting due to a federal judge’s stay that keeps the panel from meeting with its current membership. Typically, ACIP meets three times a year – in February, June and October. The 2026 June meeting was slated for June 23-25. Whether the adcom meets in October will be up to the courts and how far Health and Human Services Secretary Robert Kennedy digs in his heels to maintain a hand-picked committee tilted toward his view of vaccines.