( May 4, 2026, 1:55 PM EDT) -- BOSTON — The federal government filed a notice of appeal to the First Circuit U.S. Court of Appeals seeking review of a Massachusetts federal court’s stay of a January U.S. Department of Health and Human Services memorandum announcing the reduction of the Centers for Disease Control and Prevention’s recommended childhood vaccinations from 17 to 11 and the appointment of 13 new members to the Advisory Committee on Immunization Practices (ACIP)....